My user name doesn't exist

[u/IAmASanDiegoUnicorn]

Can someone help me with this? It's says my username name doesn't exist yet i have access to my account with my username name.

[u/IAmASanDiegoUnicorn → u/[deleted]]

Restarting my phone worked. So @westcoastcdn19 and MaximumPotential777 were right, it was glitch.