Creating Offline map


I have been trying to upload .tif map file to the HQ to make it available for interviewers when they are working offline. However, the resources that I have been using so far end up with failure (some components of tif file is missing) and open street map is the only option available to the app. Is there a reliable source to create offline maps?

Please describe the exact tools you’ve used and the process.

Is that an error message you are getting?
If not, what is the ‘failure’ specifically?

Not sure I understand this question. Are you looking for a source of maps? Or a tool to create them?