Setting Up IAP Error - Please Enter Key In Valid Format

Hello everybody! I get the error “Please enter the key in a valid format” while setting up the IAP and the transition to “Go to dashboard” and refreshing the page does not help me. “Go to dashboard” shows me the 1st screenshot (SDK was set up 2 days ago). And I filled the key on In-app purchase (IAP) settings page. Also, may be it’s important, i doesn’t have “Legacy analytics” option in Services in Unity, it just didnt appear after installing IAP package

I’m raising the topic, a similar problem has arisen. The project has been running for 2 years. Everything was ok and a week ago the key fell off and can no longer be pulled up.