Actually, just to chime in, I had this EXACT problem a little while ago. It drove me nuts trying to figure it out!
Elementor updated and started showing a white screen when I tried entering the editor no matter what I tried. I found out by searching online that it was an issue with the servers preventing the editor from loading and that I might actually be able solve the issue by going into Elementor settings from the dashboard, going into the advanced tab, and enabling “Switch Editor Loader Method.” Solved the problem for me immediately.
I hope that helps!