After enabling debug mode and maximum error reporting I get the following warnings:
Warning: include_once(/home/XXX/public_html/components/com_comprofiler/plugin/user/plug_cbpaidsubscriptions/processors/twocheckout/cbpaidsubscriptions.twocheckout.php): failed to open stream: No such file or directory in /home/XXX/public_html/components/com_comprofiler/plugin/user/plug_cbpaidsubscriptions/libraries/cbpaidApp.php on line 146
Warning: include_once(): Failed opening '/home/XXX/public_html/components/com_comprofiler/plugin/user/plug_cbpaidsubscriptions/processors/twocheckout/cbpaidsubscriptions.twocheckout.php' for inclusion (include_path='.:/usr/local/php7.0/lib/php') in /home/XXX/public_html/components/com_comprofiler/plugin/user/plug_cbpaidsubscriptions/libraries/cbpaidApp.php on line 146