Larian Studios Forums Divinity: Original Sin 2 Divinity - Original Sin 2 - Bugs & Technical Problems Switch Cross Save Issue

I'm sorry to necro this thread again, but I also suffer from this issue.

Bought DOS2 on Switch in August.
My Steam account is protected by a long password (+20 chars) and Steam Guard (the 2-factor auth method of Steam).

Every time I launch DOS2 on my Switch I have to login to Steam again. After this, the biderectional sync works flawlessly.

DOS2 is installed on my SD card. I already tried moving it to the main Switch memory. I also tried removing the saved data from the Switch system and start over. The problem remains.
My Switch is on the latest Nintendo firmware.

I am located in Belgium, so if it would be _any_ help, I'd be willing to have my Switch collected for solving this at Larian HQ.