@Mohamed Aly (International Business Service) Thank you for your post and I apologize for the delayed response.
Are all servers on same vCenter?
Are you getting any error in notifications?
Does appliance has recommended resources?
Also, try restarting appliance server.
Check this link on similar issue - https://learn.microsoft.com/en-us/answers/questions/88717/discovery-in-progress-in-azure-migrate.html
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