Having trouble with BTCPay Server. My node is fully synced, but BTCPay button only works on my desktop. I reached out to BTCPay for help and this was their response. Thanks.
answer to your question is here
Using a Tor link is a quick way to get a BTCpay server button.
First, connect using Tor 
You can find it in the settings :
Then, you go to BTCpay server :
So, you are connect on BTCpay server by Tor :
And finally you have a Tor adress for the BTCpay button :
