Hold up, the bill pay integration isn't available yet is it? My assumption was that it would require integration with the banks - have I got that wrong?
Discussion
My strike app is linked to my bank account for instant purchase of btc but I don’t know about the bill pay function
I wrote an article about it that might answer some of your questions.
https://bitcoinbarks.com/Barks/strike-bill-pay-deep-dive/#wbb1