Hello there, There should not be any issue with the earlier shared fixed plugin. But just to be sure you can add the fixed plugin on your staging site first and check the flow there. If everything works accordingly on your staging site then add the same plugin on your live site.
Also for the Allowed memory size issue kindly create a staging site where the issue is replicated and share the staging site url, temporary admin and FTP access of your staging site with us so that we can look into the issue and assist you accordingly to resolve it.
Also while sharing the access don’t forget to mark your reply as private.
