xines

Sure thing, it’s 1.7.4

Thank you, I have already tried every version mentioned in this thread with the same results: https://www.ads-software.com/support/topic/version-5-180-breaks-mainwp-compatibility/

php error logs:
PHP Notice: Undefined offset: 1 in …/wp-content/plugins/cleantalk-spam-protect/lib/Cleantalk/ApbctWP/Variables/AltSessions.php on line 62
PHP Notice: Undefined index: fields in …/wp-content/plugins/cleantalk-spam-protect/inc/cleantalk-public-integrations.php on line 2330
PHP Notice: Undefined index: label in …/wp-content/plugins/cleantalk-spam-protect/inc/cleantalk-public-integrations.php on line 2338
PHP Notice: Undefined index: email in …/wp-content/plugins/cleantalk-spam-protect/inc/cleantalk-public-integrations.php on line 2434
PHP Notice: Undefined index: name in …/wp-content/plugins/cleantalk-spam-protect/inc/cleantalk-public-integrations.php on line 2441`

Same issue here with 504 error on my site, but I don’t use the MainWP plugin. Had to remove CleanTalk plugin to access my site.

EDIT: works intermittently in Firefox, it just stopped working again and I did nothing, never works in Chrome

This is my problem, too! Please can someone help?