i'm sorry but i confirm everything as described (and i know it's not normal).
it's an android electrum installed 2 days ago on a galaxy tab s2 quite new (i installed personally).
2 days ago i did the same btc movement from bitpanda to this wallet and everything worked.
i'm not the master of btc but also not a beginner... so it's not thee first time i handle a wallet.

on the transaction list i see a confirmed transaction with 0eur and no btc amount. never seen something like this.

the transaction in electrum appeared immediately unconfirmed after the outgoing transaction done in bitpanda and yes... address is correct. so the transaction listed in the wallet is the same i did in bitpanda... after minutes was confirmed but with still no btc amount and 0eur value.

as i'm a php programmer, i have the feeling that electrum collected wrong infos for this transaction and now it has this bad data stored.

status is "syncroniyzing" instead of showing the balance.

is it possible to change server and/or import transaction from blockchain in electrum android?
any other idea to restore/refresh data before trying to restore the seed?

many thanks to both in advance for your precious help.
as wrote before, i suggested personally to invest in btc and to use electrum because really trustable and safe... so i really feel in fault if he looses 2500€ thanks to my suggestion.