With regards to the channels/bouquets/epg:-
The most common mistake is that people mix up the two systems. Deal with the two separately and it will be straight forward.
How are you selecting the channels. E2 uses the last mode you selected. When you access the EPG, it will then invoke channel selection system.
I suppose in short, don't press the EPG button for now, use the channel +/- buttons. Then select the bouquet. If you have used ABM to create your bouquets, you will only have your regional channel in the bouquets. The other channels will still be on the system. Enigma 2 has background scanning. So if you plan to only have services you want, make sure you disable it.
On Vix, the factory reset has option to just remove the channels and bouquets. Alternatively,
init 4 && sleep 10 && rm -f /etc/enigma2/lamedb && rm -f /etc/enigma2/*.tv && rm -f /etc/enigma2/*.radio && rm -f /etc/enigma2/*.del && init 3
For obtaining EPG, on Vix, disable the Freesat EPG reader in the EPG settings menu ) I am not talking about bouquets/channels). Then use OpenTV EPG downloader.