No API Connection with Mautic
I installed Mautic and use Thrives (WordPress Plugin) on a other host.
After setup the API connection I could use the Thrive Optin builder in coorperation with Mautic.
Today the API is not working properly, I can't choose a (Mautic) mailing list.
Something is changed on the server, maybe an update or so.
Somebody knows how to solve this?