E-mail sent after import

Hello,,
I am using Ultimatemember plug in together with [Import users from CSV].
Users were imported successfully.

I ticked [show password nag on new users signon], because I used an unique password for all.
The e-mail sent from [show password nag on new users signon] function does not seem to be eddited by Ultimatemember plug in..
I need to edit this e-mail somehow, Can anybody advise me how I can reach the template of this Password nag e-mail?

Best regards
Fujii