I just started experiencing the same problem today on my Roku Express 4k. I can't get past the bouncing Roku logo. Tried the reset button and tried turning my wifi off. Nothing helps. I purchased this from Amazon on 6/20/22
I am having the exact same issue, it was working fine and now the bouncing logo. There are no support agents that work with the 4K + express so thought I would try here. I have it plugged in correctly , tried a hard reset, nothing is working. I purchased 7/22 at Bestbuy.
Melody
There was no solution for mine to fix so I was instructed to send it back and they sent me a new one to replace it.
I left it unplugged overnight and now it is working correctly again.