Support

In fact, Anti Spam Word is exactly what you are supposed to use as long as the form component goes through Joomla! when submitting the form. I have not used RSForm so I can't tell you if that requirement is met. I can, however, tell you how Admin Tools should be configured.

Extensions, Components, Admin Tools, Web Application Firewall, Configure WAF. Click on Active Request Filtering, set Anti-spam filtering based on Bad Words list to Yes.

Extensions, Components, Admin Tools, Web Application Firewall, Anti-spam Bad Words. Click on green New button at the toolbar. In the Word field type BusinessFunds365 and click on the Save & Close button.

That's all :)

The GeoIP blocker has the precision of its third party GeoIP library (MaxMind). They claim 95% accuracy for the free version of their database (the one installed by default with our software for obvious licensing issues) and 99% for the paid one. For the purpose you are inquiring that 95% figure of the free version is more than adequate.

I have to remind you, however, that blocking the entire Poland may not be a good idea. You will also block legitimate visitors from this country. You know your site and its demographic best, I just have to warn you :)

Finally, if you see that their IPs are always in the same range you can use the IP Blacklist in Admin Tools to block a range of IPs (instead of an entire country with GeoIP blocking). I've had a similar case of spammers using actual humans to beat reCAPTCHA on my blog. They were coming from India but so does a not insignificant chunk of my visitors. I observed that their IPs always came from the same narrow block, indicating that they were operating off an office building. I went on a limp and blocked a range of 64 IPs around the ones spamming me. I haven't heard from them in a month!