Bitcoin failure from today 😢

I stopped in Ojochal and it was cool to see that multiple spots accept bitcoin, but I couldn't pay, because there was no cell reception (not even on local Liberty simcard). These merchants/stores should really have some easy way to connect to their wifi next to the area where you pay - they could have the wifi QR code printed (see example below).

When both merchant and buyer have connection: all good.

When seller is offline: we can use their Static QR and it's ok.

When buyer is offline: is there any solution?