Wordpress plugin does not work but takes my credits

I have installed the wordpress plugin (it says its not been updated for 3 years!!) and I have purchased credits.

When i try to proofread inside wordpress it fails, but takes the credits from my account, when i click on the proof read button on a blogs fron end, it redirect to your site takes my credits but does not copy the content over.

I have lost several hundred credits and not got the proofread for them.

Do you plan on fixing the wordpress plugin?

Error code from within wordpress is :

GENERAL
500
At: https://www.cbdexperia.com/wp-admin/admin-ajax.php?action=proxy_PBot&_wp...

Please see screenshot

Thanks

Andy

Type: 
Bug
Status: 
Open
Image: