Skyrim automatically disabling my mods even though they are enabled in Vortex

[phobosia]

Hi, having trouble with getting my mods to work.

Trying to start a new game and I noticed I was getting the default game start instead of the alternate start, then I realised it was because skyrim has all my mods disabled by default.

Im not really keen on using the creation club to enable my mods because I read that it can mess up load orders. Any way to fix this? Here's the message that appears when I try and load an old save file.

[7531Leonidas]

You should probably be asking this on the Skyrim SE forum in Game Communities, as the regular viewers there will have more experience with the game.  You will need to join to post.  From the Vortex Support page:

Focus on Engine Fixes .toml info - you have to edit several lines.

[wesleydontmater]

maybe im  a bit late but.
its the sse engine fix.
go to the TOML 

EnableAchievementsWithMods = true
edit this line to false
hope this helps