why i can't make a thread in marketplace

why i can't make a thread in marketplace it instantly disappears so there is no thread when i submit

Not an account problem. Moved to staff dispute. Both threads you created were deleted. You should have received a private message stating the reason as to why they were deleted, and who deleted them.

Proofs must be provided on the thread. Contacting on Skype for proofs is not warranted.

What probably happened is that it went in line for approval.
Do what Liz & Hero said and be sure to read the stickies on the Marketplace before making a thread.
That way you will know what to do and to confirm your thread can be approved.