I was a former ps4 player and played rainbow six siege. But now I have switched to the pc. I now want to buy rainbow on mmoga. I keep the progress, i.e. View the operator, etc. When I enter the key on my ps4 ubisoft account redeem? Or does that not work and I have to create a new ubisoft account and redeem the key there?
No, you can't.
No, you don't keep your progress
No, that doesn't work (yet). But maybe in 2 years.
So do I have to create a new ubisoft account and redeem the key there or can I just redeem the key on mine?
So do I have to create a new ubisoft account and redeem the key there or can I just redeem the key on mine?
You can also use the old Ubisoft account. Ubi differentiates between all platforms.
Simply redeem it on the old account, it will work.