Aquaris X can't access developer options

The whole phone seems to be in some sort of "simple mode", most applications like play store are non existent. The settings seem to be much simpler, without options such as "install from unknown sources" etc. I can't even enable bluetooth or browse my files. I wanted to enable USB debugging to flash a new costum rom, but I can't turn on the developer options.

I also cannot enter the fastboot or recovery mode.

Please help.