Problem with a time machine backup

I wanted to make a windows server routeur AND time machine backup, a bit like a time capsule from Apple… So I followed different tutorial about how to do a time machine backup system, I achieved it and decided to program the wifi router… I failed and after that I couldn’t see the backup on the network anymore ??? I am a total noob so I you have an idea ? please…

Im am under ubuntu server 16.04

I’ve moved this to the https://community.ubuntu.com/c/support-help-requests category because this site isn’t designed to take tech support questions. Sorry. I’d recommend using one of the official support channels listed on the https://community.ubuntu.com/t/finding-help/712 page