After the sandbox upgrade, when I re-login to my developers.bmc.com account, its asking me to request another sandbox.
How can I get my existing sandbox (developer3925.innovate.bmc.com) back?
Please check if you could see your old instance and try logging to it.
I could log in to my sandbox using direct link, then I refreshed my dashboard on developers.bmc.com and I can see my sandbox there. thanks Krishna for your help.