Call to undefined method AcyMailing\Classes\
Hello,
I'm using the newest Version of Acymailing for Joomla 3.10 together with Convert Form.
When a subscription form is sent, the subscriber is added to the subscriber list, just not to the specified list. Only as a subscriber with no list.
And the "double opt-in message" is not sent to the subscriber.
On the form of the subscription on the webpage the subscriber gets the feedback "Call to undefined method AcyMailing\Classes\".
What can I do to make it work?
Thanks.