Terms of Use 4.4 says:

4.4 You may only submit user-generated projects that were created with (1) the Scratch website editor or (2) an unmodified copy of the Scratch editor compiled from the source code described in Section 5.3. You may not upload any projects that were created, by you or by anyone else, with a modified version of the Scratch editor.

Scratch Offline Editor is not a website editor. Let's read the Section 5.3 to see if the offline editor is the “unmodified copy of the Scratch editor compiled from the source code described in Section 5.3”:

5.3 The source code for Scratch 1.4 is available for download and subject to the copyright notice as indicated on the Scratch FAQ page.

So, Scratch 2.0 offline editor is not website editor, and it's not compiled from the source code described in Section 5.3 because it only mentions Scratch 1.4. Therefore, you may be banned if you upload a picture from the offline editor.

Hmm, that sounds wrong. So my suggestion is: can you change the Terms of Use to allow upload from the Offline Editor?

Yeah, I'm pretty sure the intent was not to disallow uploads from older versions of the offline editor.

As Paddle2See said, I don't think that was the intent, although, maybe change it and add something about official offline editors being allowed?

support because i dont want to be banned for breaking this rule in the past.

i decided to not make any more projects so that i will not be banned.