de.number26.android N26: cannot pair smartphone

Affected app
Name: N26
Package id: de.number26.android

Describe the bug
I'm not entirely sure if it's a MicroG problem, but maybe someone has other inputs to try:

When pairing the N26 app and the smartphone, an E-Mail message is sent to verify the address. This seems to work and the N26 app displays "E-Mail successfully verified". However, at the end of the linking process, as soon as the confirmation code is entered, the N26 app displays an error message indicating that the E-Mail address needs to be verified.

To Reproduce
Steps to reproduce the behavior:

1. Got to N26 app, log in with SMS code
2. Start smartphone pairing process
3. Verify E-Mail address and enter personal code
4. See error

Expected behavior
After step 3, a success message and a paired smartphone app.

Screenshots
If applicable, add screenshots to help explain your problem.

System
Android Version: 13
Custom ROM: LineageOS for MicroG 20240101

microG
microG Core version: 0.3.0.233515 (didn't work with 0.2.27.223616 either)
microG Self-Check results: All ticked

Additional context
Magisk and Shamiko also installed, SafetyNet passes.

The report names no source file, test, or entry point. Start by reproducing the N26 smartphone-pairing flow on Android 13 with the listed microG versions, then investigate where email verification state is handled after the confirmation code. Done means identifying a reproducible microG cause or documenting that the failure is outside this project.