Error in database version


I am using Gravity form plugin.When i installed then form is not created .
They give error The database is currently being upgraded to version Current Status: Error Migrating Entry Meta: Table ‘nerdnerd_6rV.wp_rg_lead_meta’ doesn’t exist NAN% complete, When i click on force to upgrade they still loading.

Please suggest what should i do.

I suggest you open a support ticket for this issue:

I created a open support ticket but after creation i am unable to find the ticket which is created by me.
Please Chris tell me how i resolve this issue.