"Each channell shows as a seperate calendar."
This is by design, we have considered (and also tested) only 1 folder, but it gets completly cluttered
"I had to add and remove a fake calader to get EPC calendars to show - is there a way of refreshing this part?"
There is an option to resync (Setting button Down arrow)
"As all EPG sources were listed in one lump i tried to add a "TV" sub folder and then point the setting to this to neaten things up - so far no luck in achiving this - any thoughts? I shall keep tinkering."
When you change the Root folder, the addin will re-create all child folders from scratch, you have to delete old folders manually
"I was able to schedual recordings and also watch tv - TV quality was not good however but I notice settings for streamning TV are not in the bets so I guess this will come in due course."
The addin has no influence on TV quality, check your DVBLink server settings. We do not transcode (yet), so what you see is direct stream from your server