Hannah

Hello, sorry for the delayed response:
Here are some screenshots of my client’s Facebook settings. His Facebook account and Instagram accounts are linked, and he has a personal IG account (not business).

Off-Facebook Activity
https://snipboard.io/Am2ZXG.jpg

Manage Future Activity
https://snipboard.io/daiRZB.jpg

Activity Turned Off
https://snipboard.io/ThUNQH.jpg

• Is it possible that this error could be caused by him forgetting to remove his account before re-adding it?
• Or by my forgetting to clear the cache after updating plugin versions?

I will test out these hypotheses on a business day, just throwing them out there for now.

Thanks Adam. This is the first time that this has happened. FYI, they were using Internet Explorer as their browser.

Hi @wfadam! Thanks for responding.

This was a new user or an existing user on the site?

It was a new user.

Do they have 2FA enabled?

No, new user.

… ask the user for their IP address to search in your Live Traffic

I found their IP address by looking at the failed logins list. I copied and pasted the IP address to the Live Traffic advanced filter; however, no entries were returned: “No requests to report yet.”. I did make sure that there were no trailing spaces.

https://postimg.cc/KKsJWV5F

Does this maybe sound like a pwned email + password?

What can we try next?

• This reply was modified 3 years, 7 months ago by Hannah. Reason: add @

Thanks @vmarko :

OK = Has effect; Image lightbox loads, NOK = No effect; Image lightbox does not load.

Effect of Disabling Individual Browser Cache General Settings which were previously enabled, then purging the cache.
– Set Last-Modified header: NOK
– Set expires header: NOK
– Set cache control header: NOK
– Set entity tag (ETag): NOK
– Enable HTTP (gzip) compression: NOK
– Prevent caching of objects after settings change: OK

Okay, so the setting which made the difference was “Prevent caching of objects after settings change“. I will go ahead and disable this setting on production.

Do you have any other suggestions?

P.S., Every time I purge the cache on staging, the whole website returns a 500 status code for a minute. Not sure if it is a related phenomenon.

• This reply was modified 3 years, 8 months ago by Hannah.

Ok, WPackagist is a mirror of www.remarpro.com.

To get the equivalent WPackagist name for the plugin, look at the URL of the plugin on www.remarpro.com. For example, Layer Slider WP is located at /plugins/slider-slideshow/ on WordPress, so it can found on WPackagist by searching slider-slideshow.

Just wanted to reply and let you know that LSCache has an option to disable its “optimizing” features quickly.

LiteSpeed Cache > Toolbox > Debug Settings > Disable All Features

Had to use it today, but for another reason..

Sorry, got ahead of myself; I blame the coffee.

you leave LS active and AO off?

Plugins > Deactivate AO > LiteSpeed Cache > Toolbox > Empty Entire Cache.

FOUC: still present in incognito, and now the page load is slower ??

you disable both?

LSCache > Toolbox > Empty Entire Cache > Plugins > Deactivate LSCache.
FOUC: Appears to be gone!

you leave AO active and LS off?

Plugins > Activate Autoptimize

FOUC: Not present

Thanks, it appears that LSCache and AO were not working well together. I do like using LSCache for the ability to purge the cache completely, because once in a while I will get a 404 on an autoptimize.js file.

• This reply was modified 4 years, 1 month ago by Hannah. Reason: add blockquotes

As a side-note:
If you arrived here because of the tags “elementor” and “fouc”, then please read this:
https://docs.elementor.com/article/249-embedded-template-css-loading

• This reply was modified 4 years, 1 month ago by Hannah.

Understood. Here’s a couple things that I tried today.

In LiteSpeed Cache > Page Optimization > JS Settings > Load JS Deferred > Turn OFF.

• FOUC: Still present on incognito window.
• Perform cache reset > “Purge All” (not “Empty Entire Cache”).
• FOUC: Still present on incognito window.

In Autoptimize > JS, CSS & HTML > Optimize JavaScript Code? > Uncheck.

• Perform cache reset > “Purge All” (not “Empty Entire Cache”).
• FOUC: Still present on incognito window.

My gut says that this issue may not be related to either LSCache or Autoptimize. Maybe it is related to how Elementor and the theme (Astra) work together…

Aha! I noticed that the FOUC was not present on the About page, so I went to each page to check their template.
Pages > Edit > Page Attributes > Template.

The pages with the worst FOUC were using the “Default template”.

The About page was using the “Elementor Full Width” template.

Let’s switch the template types and see what happens…

Well, FOUC is still present. Not really sure what to do besides live with it.

Let’s just try one more thing and make my web server lift some weights:
LSCache > Toolbox > Empty Entire Cache.

FOUC: Still present on incogito window.

All right, sorry to answer my own question:

https://docs.litespeedtech.com/lscache/lscwp/ts-optimize/#still-seeing-fouc-with-critical-css-enabled

Resolving CSS FOUC
In LSCache > Page Optimization > CSS Settings, I had “Load CSS Asynchronously” and “Generate Critical CSS in Background” enabled, which means the page can load before the CSS.

Turning “Generate Critical CSS in Background” to OFF improved the styling FOUC.

However, there is still some content movement on page load. I suspect it is related to JS optimization settings. Will comment if I can resolve it.

• This reply was modified 4 years, 1 month ago by Hannah.