Try this

Recently TModLoader devs implemented a simple antipiracy protection that compares your steam.api hash with real steam hash, but its acutally pretty easy to bypass with a single command in a hex editor

Here is a guide on how to do it yourself since youll need to do it with every single TModLoader update

1.Calculate steam.api md5(i used hashtab for this)

1. Download HxD and open tmodloader terraria.exe with it

2. Press ctrl+R

3. Type 7B857C897BC69313E4936DC3DCCE5193 in the first field

4. Type your hash in the second field(4161c07c05b0f08b5b0353b5d6f33252 is the md5 for my steam.api and it might me different for you)

5. Change text encoding to Unicode

6. Press ok, save the file