There are a few issues.
1. the unit itself has the wrong information in it
2. the coms to the app dont appear correct.
3. the unit does not respond properly to some commands (delete)
I strongly suspect that the board (brains is damaged).
Who do you have the app through?
As I have never heard of this I have spoken with Risco as spoken to one of the few there that I highly respect.
It would need deeper investigation, without certain information I wouldn't be able to attempt a login remotely and have a look or use the and I dont think it be cost effective at less than £100 inc VAT for a replacement PCB, it would also be easier to inspect the board if it was in front of me.
Are you using their programming software?
Be interested to know how you get on, good luck.