Ian, you might want to clarify that the only thing submitted to the 3rd party service is the company name of the customer and there was no submission of any customer logs.
Some other commenters in this thread think that you log their ip and submit their ip.
It's a pretty reasonable conclusion when the vendor claims to know where you're using the software, and the evidence is that the vendor claims to know where you're using the software.
My impression from the OP is that the company does not claim to operate out of Russia or Belarus. Presumably, neither would the website. Clearly there's some other method by which that third party makes that determination, and clearly that method produces false positives.
Some other commenters in this thread think that you log their ip and submit their ip.