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 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 page