Posting just to communicate what is happening on the user side. I updated the companion app at 2:30 ET on an Android. It now says "Update Required" then bounces me to the Play Store where there is no update to the app. If I hit "Open" in the Play Store, it kicks back to the app saying "update required."
Appreciate that you guys are working through this. I'm also curious if there is now a limit to how many cards can be sold in a 1-2 minute window. I received a message that my account was restricted after selling some doubles that I opened in packs; I waited two minutes and it worked for a bit before I received the same message again after opening another pack and selling doubles.