Why my account was Watched? I am new member Altcointalk froum. please admin remove my watched.
For more information, it's a temporary warning that only lasts a few days or so:
Temporary Warnings (Not Membership Groups)
=> Below 10% warning level no longer appears on your posts, the warning level will eventually decrease to 0%
It's also likely due to receiving this badge, as you've posted >50 in a day as a relatively new user:

Depending on your grasp of English, here are some guides you may find useful:
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How to grow rank & get content without penalties-
How to rank up & use this forumBest of luck becoming part of our community here.
Edit: I can move this to the forum court for you to appeal, but I believe Nostoman has a good reason to be keeping an eye on you at the moment.
So be careful.
I find this use of language a bit aggressive to be honest. A more friendly way to say this would be "Please be careful".