WSOD and Fatal Error after update

Dear Dimitris,

After your last update, I am facing a White Screen Of Death… I restored that up thru ftp panel deactivating your plugin.
I tried to enable again but I receive the following error:
Error: PHP Fatal error: Can’t use method return value in write context in /var/www/vhosts/promaco.gr/animated.gr/site/wp-content/plugins/autoconvert-greeklish-permalinks/admin/agp-admin.php on line 112 Fatal error: Can’t use method return value in write context in /var/www/vhosts/promaco.gr/animated.gr/site/wp-content/plugins/autoconvert-greeklish-permalinks/admin/agp-admin.php on line 112

I need your precious support.

Best regards my greek friend!
Nick