If you updated your master, this is because you either shared the whole website or the most frequent case is that you are logged on the master.
When you enter a domain name that does not match exactly the name you enter in the list of slave site, this display the master website.
For example, if you have defined a domain with domain.com and after that you enter the "
www.domain.com" in your URL then the "www" is not defined as slave site and the master is displayed.
So check that you correctly spelled the domain name in the URL and that you have defined all the variant in the slave site definition (including WWW, without WWW, with http, https, ...)
The domain name must have a exact matching.
It is also case sensitive.
Also enrure that you saved the slave site definition with success (blue message and not a red one).