I have a site URL environment varaible which is being refrered by Powerapp and different flows (Yes, power autoamte but flow is shorter to type)
Everyhting is working good. Now in same environment I created new site collection and now want my apps and flows to refer this. Easy, right? since MS has given us great environemnt varaible option.
So I ]went to environment variable and trying to update site URL and obviously it complains that I should select value , only from dropdowna nd should not type in site URL (Only to find that my site is not listed in dropdown) Its more than 2 hours since site is created. I am the site colelction administrator on this site. Screenshot below

Only when I can get this working i can move to next issue where my app and flow are not going to recognize environemtn variable anyways and i have to edit them once at elast to get these new variable values recognized. (Thats different issue though) https://powerusers.microsoft.com/t5/Building-Power-Apps/Data-source-variables-are-still-referring-to-old-values-in/m-p/1217744#M319372