hi there,
I contacted the mail poet team and they had an answer.
it worked out perfectly for me.
good luck and really – no data will be touched.
celotte
Please, try to reinstall the MailPoet plugin following these steps:
– Go to the WordPress plugins page.
– Deactivate MailPoet.
– Delete MailPoet.
– Install MailPoet again from WordPress repository (you can search for “Mailpoet” within your Admin page >> Plugins >> Add new)
Rest assured you won’t lose any data, the database will not be touched.