Did you try to do something with P18 setting?
You can actually try this approach. This is a suggestion by a rider to another rider in Vsett 10+ Telegram group:
Turn on , hold plus and minus real quick for a second, press the + 17x to get to p18 check your manual and count from the first setting to the NFC setting.
Then you're there even though you can't see it. Hold

for a second to clear the current keys then

to add keys, tap each key one at a time then power scooter off/on try unlocking
Hatte das anders verstanden gehabt....
Ja 16x bis man auf p18 ist dann lange - drücken und den Speicher zu leeren und dann mit + neu anlerenen