Hi @vsense,
I see in the system you have an SB2+ Modem. Here’s an article that shows how you can reset your Wi-Fi credentials: How do I change Wi-Fi settings on Surfbeam 2+ modem?. This link is a detailed step-by-step on how you can access your modem’s page and reset the credentials. Since you cannot connect to your Wi-Fi at this time, you will need to use an ethernet cable and a computer.
Thanks,
Leonardo