Hi Thanks I followed the same process as you said.
When I went to Plugins, on MailPoet3 Premium there is a message - "There is a new version of MailPoet 3 Premium (New) available View version 3.0.83 details. Automatic update is unavailable for this plugin. Register your copy of the MailPoet Premium plugin to receive access to automatic upgrades and support. Need a license key? Purchase one now."
What should I do now? Should I update it? Or Register or purchase?
It is showing error too when I am visiting > Mailpoet wecome wizard Mailpoet>Emails
Update: When I tried to update plugin it is saying > An error occurred while updating MailPoet 3 Premium (New): Update package not available.
And problem remains.
I was mailed by Wordpress too saying - "Since WordPress 5.2 there is a built-in feature that detects when a plugin or theme causes a fatal error on your site, and notifies you with this automated email.
In this case, WordPress caught an error with one of your plugins, MailPoet 3 (New)."