HostPuma

Can you post your .htaccess code here?

Also, try setting permanent links back to default, then switch to the one you want, and see if it works.

Check the folder permission where your trying to upload the XML.

Did you try reinstalling the 2 widgets?

Does the content show if you switch your theme to default one?

Open linen-extend.php and copy line 341, then post it here. Do the same for avh-db.php but line 62.

Switch to one of the default themes and see if the problem is solved.

If so, you will need to update your theme to work with the latest WordPress version.

Please check your SITE_URL under Settings > General.

Also, enable WP_DEBUG in wp-config.php and check your website if there are any errors. If so, post it here.

What’s the website URL?

Its down to waiting until they update to 5.5

The most important thing is to make sure you backup your website. Once the PHP update is done, fully check your website and come back here to post any errors/problems your having.

Once again, its always recommended you keep your blog and plugins updated.

Great, Im glad you found the plugin causing the issue.

Good luck with your website.

Yes, the website is very slow.

How long it has been slow and what have done/installed before it happened?

Also, what plugins do you have installed?

What version of WordPress your currently using?

In general, its always recommended you keep your blog updated, specially plugins. The security risk of having outdated blog and plugins is high.

It can be your internet, it can be your host, it can be your blog itself or it can be all of that.

What’s the website URL?

How many plugins you have installed?

The problem is with the server configuration, so you need to contact your web host to solve it.

You can try deleting the .htaccess file and uploading a new one.

Also, check your website error logs. If you have cPanel, login and goto Error Logs, post the latest errors you have here.

What’s the HTTP error your getting?

Do you have the correct CHMOD permissions?

Your website URL?