Can you run scripts online and get banned with Scripthook? According to Alexander Blade, the SH5 author: "Script Hook V is the library that allows to use GTA V script native functions in custom *.asi plugins. Note that it doesn't work in GTA Online, script hook disables custom scripts when player goes in multiplayer".
What about mods, not just scripts? According to the OpenIV developers: "With installed ASI loader and plugin, you will not be able to go into GTA Online. This will keep you from accidently [sic] banning and GTA Online will be protected from modifications." Source: https://openiv.com/?p=1082
So what happens if do try to go online? You get an alert. That's all. But, if you are still completely Paranoid, or if you just want to play no mods vanilla, go into your root folder and rename dinput8.dll to dinput8.bak and run your game.
This is the alert message trying to go online with a modded game. (Hitting continue brings you back to SP Story Mode.)
@KraljStefan96 i wouldn't say it's a conflict, but rather either a poorly written or outdated script that won't run properly or is conflicting with other scripts you installed. That's why i suggested renaming your scripts folder to rule out hardware, software, or integrity issues. Problem could also be asi in root folder but that would be next step.
@puro63 I can't help you because I have no idea how many models you installed and how many mods and which combinations you installed and don't customize clothes. But, I'm guessing you are selecting the wrong torso, wrong legs etc ... and/or you may have installed some components incorrectly.
You need to find the right combination and it can be tricky and frustrating at times.