This install cannot send email, so there is no link to send you — that is deliberate: ReplaProject is a project tool, not a mail server.
Anybody who is an admin or an owner of your brand can set a new password for you in seconds, under People. They will read it out to you; you can change it to something of your own once you are in.
If nobody can do that — you are the only owner — whoever runs the server
can, with one command. It is in INSTALL.md
under “Locked out”.