I've been using resilio now for quite a while (it was called btsync, remember?) , having an home pro license and upgraded to home pro family license a while ago.
With version 2.7.0 I'm not able to use my license on private windows server which I was before. Maybe (edit: looks like you did) you decided to tell home and PRO business use apart by the OS one is using. I don't think would be fair. Of course I'm using resilio home pro family because I do have a lot of data to sync like media e.g. DNG / RAW photos oder backup files. If I wasn't using resilio with a lot and mostly large files, I would use some cloud service, which I did in the past (let's forget about privacy). So what if not for storing backups away from home at your brother's or parents house would I use resilio?
Besides that it's nice to have a server at home, so everyone in the family household is able to use whatever computer / laptop to log on to without preparing every device again and again. So with 5 family household members alone, that - hint hint - home PRO FAMILY license came just right. Not anymore, though.
So, please reconsider. I would be even willing to pay for a 2 server usable license, like an upgrade or whatever. But having to buy a License for 20 or even up to 60 users for min. 10$ / user is a bit - I don't know, still looking for the right word.
Now I feel like my "lifetime" license just died. I already sent a ticket, but looking at this thread shows, that I'm not the only one who feels, that he paid for a product which is no longer usable. I understand the product evolves, but that's here different. Having to kick out the two syncing server systems or buy a really high prices server license would be both really bad.
Unlike some other people here think, getting a license for server that expensive, in the EU it's legal for sellers to (re)sell OEM or used licences to whatever price. In Germany the court ruled it legal. And using a server doesn't mean you're doing business with it or with resilio for that matter, it means, that maybe you're a PRO user ... hint hint: home PRO licence.