Failed to add user – 400

hi @fatcatapps please can you respond to this request for help with your plugin

hi
our opt-in for has stopped working its Version 2.4.1 on WordPress version 5.2.3,

from the back end, the API key is good and our correct MailChimp lists are displayed in MailChimp I can see that GET’s for the list name is working

but when a user fills In the form they get a Failed to add user – 400 error

and I can see in MailChimp a failed GET

2019-10-04 11:58:59 GMT nope 185.80.133.137 GET /lists/…/members/…/ php 0.014s WordPress/5.2.3; https://greaterbrislington.org 3.0 The requested resource could not be found.

and a Failed PUT

2019-10-04 11:59:00 GMT nope 185.80.133.137 PUT /lists/…/members/…/ php 0.042s WordPress/5.2.3; https://greaterbrislington.org 3.0 Your merge fields were invalid.

so far as I’m aware we’ve not changed anything in the MailChimp list / subscribe since this was first set up and it did work originally its been broke ni think for maybe a month or so

if you can give any help or advice that can get us back up and runnning that would be awesome

thank you Dougal

Hello Dougal,

Thanks for the details. We will see how we can help.

We don’t have any other users experiencing similar problems that I’m aware of right now. So the first place to start is to make sure the other softwware on your site is not somehow causing interference. A new plugin, or an update, could be causing a conflict.

To search for conflicts, please follow these steps.

1. First please deactivate all plugins except Optin Cat and see if the issue persists.
2. If the issue is resolved, reactivate your plugins one by one, testing after each to see if the issue returns.
3. If no conflict is found among your plugins, try reverting to a default WP theme like ‘Twenty Sixteen’, or ‘Twenty Seventeen’, and see if the issue is resolved.

Head here for detailed instructions:
https://fatcatapps.com/knowledge-base/search-for-conflicts/

Let us know your results, and we will go from there.

Regards,

hi

we’ve tried selectively disabling plugins – we only have a couple of others but this hasn’t made a difference we’re running the latest version of your plugin and the latest WordPress there’s at least one other user who’s posted on this thread experiencing the same issue the plugin seems t ofunction but is failing in its dialog with mailchimp as per

from the back end, the API key is good and our correct MailChimp lists are displayed in MailChimp I can see that GET’s for the list name is working

but when a user fills In the form they get a Failed to add user – 400 error

and I can see in MailChimp a failed GET

2019-10-04 11:58:59 GMT nope 185.80.133.137 GET /lists/…/members/…/ php 0.014s WordPress/5.2.3; https://greaterbrislington.org 3.0 The requested resource could not be found.

and a Failed PUT

2019-10-04 11:59:00 GMT nope 185.80.133.137 PUT /lists/…/members/…/ php 0.042s WordPress/5.2.3; https://greaterbrislington.org 3.0 Your merge fields were invalid.

Hi,

I am getting the same issue here.

I have tried to create a new pop up form and I get the same problem.
In MailChimp I had some fields which were mandatory and I removed those and I still get the error.
In WordPress OptinCat, within the subscribers menu I get the following:
failed to add to mailchimp [400]

Thanks,
Jay

Hello Guys,

Sorry for the delay in response. Let’s see what we can do.

@jay35h did you preform the conflict isolation steps described above? We need to make sure the issue is not caused by interference before we can troubleshoot further. Then make sure you don’t have any fields marked mandatory in your mail chimp settings. If that’s not the issue just look for the same things I suggest next.

@doogstar Ok, so if the GET for list name is failing, please check that we were able to successfully pull your lists. They should appear right below the API key. Also, make sure you have a list selected.

Then, perhaps if you changed the name of the selected list, it’s having an issue finding it. Please make sure what you see selected in Optin Cat matches what you have in MailChimp. If not try re-entering your API, re-selecting the list, and saving the from again.

Let us know if any of those things appear to be the issue or not.

Regards.

the plugin does successfully pull the lists I can see the name ( I only have one list) in the plugin etc and whats shown in optincat matches the name in Mailchimp

Hi there,

I apologize for the radio silence on this thread.

Let us know if there is anything we can do to help.

All the best.

Hi there,

I am going to mark this as “resolved” but if you have any more issues, feel free to reach out to us again.

All the best.