An here is a tutorial on how to setup up BTCPayServer with the Strike API Plugin: 
https://www.flare.pub/w/naddr1qqr4q3m9fe34wdgppamhxue69uhkummnw3ezumt0d5pzqadlydf3460e333fjkaqwxg7fz82636ew5m36c7hml2xhhsml2y4qvzqqqy9hvuyatjq