I saw till's advice above that says:
Edit the file:
and change the lines:
AllowOverride Indexes AuthConfig Limit FileInfo
.. but I cannot find such lines in that file.
This advice was for older ispconfig releases, it does not apply to the verion that you have installed. In current ISPCinfig releases, AllowOverride is always set to "All" by default.
I wanna simulate my host's behavior to ispconfig and use .htaccess but it keeps disappearing whatever I do on the ftp.
Files that strat with a dot are hidden file son linux. So it is normal that you dont see it but this does not mean that it is disappered.
If you use the commad:
on the shell, then you will see hiffen files. If you want to see hidden files with FTP too, then you can configure it in your FTP server: