SXT LTE6 SIM deregistered.

Hello, I recently bought the SXT LTE6 antena from a friend, I was using Bite SIM. After a week I got an LMT SIM card and inserted that, it showed 2 bars of strength, and then after 30 seconds the signal just dropped. After that no matter what i did, it always shows SIM deregistered, I have tried to switch the sims back, Did factory reset, unlocked bands, fixed apn. Im a begginer so AI told me that these 2 log entries are at fault: "lte,error lte1 forced reconfiguration due to difficulty setting link up" and "+CSQ: 2097152,0"

Any help and guidance would be appreciated, I can also provide more info.

also after i took the antena down, a bunch of water poured out from it, BUT it still worked, after the sim card swap it refused to work. As i can see there are no signs of corrosion.