Whenever we create new user or try to reset the password for ODK central server, users are not receiving emails to reset the password or set up the password

Support
1

Whenever we create a new user or try to reset the password for ODK central server, users are not receiving emails to reset the password or set up the password

2

See https://docs.getodk.org/central-troubleshooting/#users-aren-t-receiving-emails. Emails coming from a server (rather than a mail service) are much more likely to be marked as spam and dropped.