CB Subscription issue with settings

Hello
The following are my specifications:
Joomla 3.6.5
CB 2.1.2
CBSUB 4.1.0+build.2017.05.19.15.39.30.520d1fe23


I have an issue with settings of CBSUB. It returns an error:

412 Error

Your request got filtered out due to possible security issues.

One or more things in your request were suspicious (defective request header, invalid cookies, bad parameters)

If you think you did nothing wrong:

try again with a different browser
avoid any evil characters inside the request url
If you are the owner of the website, you can consider revising the rules of the mod_security module or turning it off from your Web Hosting Control Panel.

Please help.

Thanks,
Tom
* I hope i did submit this in the wrong section. That is always my fear with Forums.

It's a mod_security false positive. The message directly states how to resolve your issue "If you are the owner of the website, you can consider revising the rules of the mod_security module or turning it off from your Web Hosting Control Panel.". You need to adjust your mod_security rules. Contact your host if unsure how as they may be able to help you.