Sony2900

Hello, I have a problem with my new Amundsen radio. I installed the radio on the weekend and tested it, so far everything is good. After I switched on the ignition, the radio said the component protection is on, so go to the Skoda workshop the next day and take out the component protection. Everything worked so far until I have set myself with VCDs and have added some things like off-road info. It has been working SINCE, my Bluetooth does not work anymore and my SmartLink wants to have an activation code again. Before that everything worked great, today I was back in the workshop and let him read out and some errors were displayed in the 5f control unit. B126D13: Connection between radio and antenna amplifier 1 B126E13: Connection between radio and antenna amplifier 2 B127013: Antenna amplifier 1 for digital radio interruption U11B800: Interface for external media No communication B105413: GPS antenna interruption U111100: Function restriction due to missing message My question is what could that be now? I hope someone can help me.