[BUG] Can't register device using pairing Code as of LNBits 1.5.1-rc1

[CabtonWithaK]

This bug is observed as of LNBits 1.5.1-rc1 and TPOS 1.2.0
This bug does NOT occur in LNBits 1.4.1 and TPOS 1.2.0

Also using TPOS wrapper app v0.0.2 https://github.com/lnbits/TPoS-Stripe-Tap-to-Pay-Wrapper-Stripev5/tree/v0.0.2

In the TPOS wrapper, after tapping "Scan Pairing Code" and "Continue to saved POS", it is impossible to connect to Stripe. A message "Could't register" appears.

[talvasconcelos]

@arcbtc