Yep, having weird issues too and made a post in the Technical Forums:
Had 3 Headrig’s Gift in the mail too for some reason and then all my seasonal mats - sorted thru all that and then logged out. Logged back in and got the error [You cannot join a game with both seasonal and non-seasonal heroes. (Code 316614).
Logged out and back in, and was able to start a game on my S24 Barb Kasi but then she was missing everything in the stash (reset to 5 tabs - had 10), all my gold, and my blood shards. Also my paragon levels are screwy - shows (2) on my portrait but when opening the paragon tab it shows -263 | -199 | -200 | -150 unspent points but then those same points allocated below each tab.