Okay my article skimming failed me and its seems like we're both right... but credit to you because my impression was that Musk was paying for all of it and I was wrong.

Later in that article: "The far more expensive part, however, is the ongoing connectivity. SpaceX says it has paid for about 70% of the service provided to Ukraine and claims to have offered that highest level – $4,500 a month – to all terminals in Ukraine despite the majority only having signed on for the cheaper $500 per month service."

So it seems like the US, Poland, Ukraine and NGOS were paying for some of the service but SpaceX was donating a portion of it service also.