So, i bought this pack today and i already own TS, but in TS i dont see the routes which are included with the pack... The routes are like in a separate game... How can i solve this issue?
Did you buy the Great British Railway Journeys + TS DLC bundle? https://store.steampowered.com/bundle/13568/Great_British_Railway_Journeys__TS_DLC/ As there's two separate items for sale, one which gives you the same routes on TS too (as above) and one which doesn't. Given they are the same price, you should probably contact steam support and ask them to add the bundle to your library if you did buy the wrong one accidentally.
The routes included in the pack installed automatically in TS as well right after, so the issue is solved, thanks for the help!
