"If the coin is not added for 10-12 days - it is rejected"
I sent in the request on 4/4/17 and got this package
• Premium - 0.1 btc - 4-7 business days (no guarantee in case of compilation issues)
Just FYI
If you had read the yobit announcement thread you would have found lots of complaints from people who paid the premium listing fee. This complainant paid for SOILcoin to be listed on february 9th, and six weeks later yobit still hadn't added it. I don't think yobit ever added it because searching yobit for soil gives no results.
Well after they reply there is a option for you to leave a .001 tip. I do that in hopes they will reply again. Just trying to stay on the good side :-)