Lack of support in recovering my profile as an existing vendor (multivendor admin app)

Is your feature request related to a problem? Please describe.
As an existing vendor I'm always frustrated when I could not find my profile using email ID or restaurant name. There is no information how I can recover my profile and I am forced to create my profile again.

Describe the solution you'd like
Provide error message explaining the error and recommend ways to recover the error.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

Start by tracing the vendor profile search and recovery entry points in the repository, focusing on lookup by email ID or restaurant name. Clarify the expected recovery flow and error states before making changes. Done means an existing vendor can understand why the profile was not found and how to recover it without creating a duplicate profile.

Written by the indexing model from the issue text.