[2023] Can't Login? I bought this game back in 2021

I bought this game through the Last Epoch website back in 2021.

It is now asking me to login through Steam, but it sends me in a circle.

1) Website says " A Steam Account is required to log in to Last Epoch. " So I click on the "Sign in with Steam" button.

2) Steam says "Sign-in", and I click on it.

3) I get taken back to website where it repeats #1.

Last Epoch is also not in my Steam games... perhaps the game was added to Steam after my purchase in 2021?

How do I get around all of this and just download and play the game again?