Greetings,
Thank you for contacting us. We have detected the problem and fixed it in the latest plugin version – 3.88.
Please update to the last version on the following page – /wp-admin/update-core.php
In case you have difficulties updating the plugin there, please update the current plugin files (go to https://www.ads-software.com/plugins/contact-form-plugin and download the latest plugin version 3.88). When done, please substitute the files. With your FTP program or via Сpanel go to the wp-content/plugins folder and substitute the folder with the plugin ‘contact-form-plugin’. Please make use of the following information: https://codex.www.ads-software.com/FTP_Clients
We apologize for any inconvenience this issue might have caused you.
Regards,
BestWebSoft Support Team.