For some reason ProgDVB doesn't download the EPG for channels like BBC One etc on Eurobird 28.2E.
Someone knows how I can fix this?

Now and Next should work there.
For us users of computer equipment, there's no full EPG on (most of) the British stations.

I can see the current program in the EPG and the next program, but after that it is empty.
Someone that I know that has an Dreambox it shows their the EPG for at least two days in advance.

That Dreambox may use different sources for full EPG, like from the internet, or from a hidden stream, that should exist somewhere, exclusively meant for the British market certified boxes.
As Prog surely can't take up 28.2E from Russia, there's nothing he could do, I'm afraid...
BTW, I've tested a lot of different DVB software products over the years, and none of those ever allowed me to see more than Now and Next on the British stations. Same goes for several STBs (German market products only).