Hi,
I followed the procedure what i found here https://support.mailpoet.com/knowledgebase/instructions-to-completely-uninstall-wysija/
After that I did a fresh install.
A new error message:
Table ‘xxxxxxm_x.xxxx_wysija_user_list’ doesn’t exist (UPDATE xxxxx_wysija_user_list
as A inner join xxxx_wysija_user
as B on (A.user_id= B.user_id) set A.sub_date= B.created_at where A.sub_date=0 and A.unsub_date=0 and B.status>-1;)
After that I tried an under Settings->advanced-> Reinstall from scratch
Still the same error