I have been having problems with the plugin since I did purchase the Pro version, when it was free, it was working better than now. I am sending the msg I am receiving that make impossible edit any part of my site properly unless I am in the recovery mode, although when I get in the recovery mode I can't edit the playlists because the MP3 Sonar stop working... it is very annoying. 

I already deactivate, uninstall re-instal many times and some problem keep coming back. 

Please help!

Howdy!

Since WordPress 5.2 there is a built-in feature that detects when a plugin or theme causes a fatal error on your site, and notifies you with this automated email.

In this case, WordPress caught an error with one of your plugins, MP3 Audio Player by Sonaar.

First, visit your website (http://insightoutcollective.org/) and check for any visible issues. Next, visit the page where the error was caught (http://insightoutcollective.org/wp-admin/post.php?post=22&action=edit) and check for any visible issues.

Please contact your host for assistance with investigating this issue further.

If your site appears broken and you can't access your dashboard normally, WordPress now has a special "recovery mode". This lets you safely login to your dashboard and investigate further.

http://insightoutcollective.org/wp-login.php?action=enter_recovery_mode&rm_token=UxX6X4m0ygoO1SFunwXIZO&rm_key=hP1ZgYDF4jYb0dJNBuE4ft