Works well for emails but creates excess php errors

The email process seems to work fine. However, at some point Brevo (after they took over SendinBlue) installed WonderPush which has been a big headache. I’ve deactivated it on the Brevo website dashboard and in the plugin, but I still get lots of Wonderpush php errors almost daily. After going back and forth with support many times, I gave up. Although they were very courteous, their best suggestion was to delete the Brevo plugin folder. I could not wrap my brain around that, since we depend on consistent, reliable emails from the site. Apparently, the plugin is still calling Wonderpush, using resources, and generating errors. Where’s the quality control and support?