Is this supposed to be in the clothing category?
Yeah it seems rather unrelated...
"He is buying tomato soup" should be translated as "dia sedang membeli sup tomat"
This is true. But the word 'sedang' is optional. You can use 'sedang' when you want to stress on the action that is happening. Otherwise, just switch the sentence to present tense whenever you find present continues tense.
Tomato soup isn't a clothing item!
Why 'is buying'? You can't see if it is stil going on. 'He buys tomato soup' should be correct also.
Why "she brings tomato soup" is wrong???
'Bring' is 'bawa / membawa' in Indonesian.
I wrote "Dia membli sup toma". It was accepted and no mispelling warnigs were shown.
No way to report it (only checking boxes) except here.