If you didn't get any emails from the AdSense team, I think you simply need to wait until your ads can server impressions. For my relatively old account I still need to wait a bit for a new ad unit to actually show ads.
How are you injecting the ads? Are you using a plugin, do you do it manually?

LuckyD thanks for keep in touch.
After that problem I am using 2 different Adsense account on my website and they are performing well. Why?
Yes I am using plugin to manage ad places. Is there any problem with this? If yes then why other accounts are running well?

Do NOT run two AdSense accounts on the same website. You will be blacklisted immediately as soon as the Policy Team gets wind of it, and you won't ever get an account again. Decide on one account ASAP, delete the other one and forget it ever existed.

Running two accounts would only be a problem if it looked like both accounts were owned by the same person or entity. As far as I know, there's no rule against running multiple accounts on a single site.

Running two accounts would only be a problem if it looked like both accounts were owned by the same person or entity.

Well, he did say "I am using..." but with a non-native speaker this may not be dispositive.

Does g### start by assuming that two accounts on the same site are two separate and unrelated people who both just happen to have an interest in the same website?

LuckyD I removed both other accounts and submit only I owned and wait for approval.

I've used two accounts on the same website, the same pages even, and it caused me no problems. I don't think G assigns any importance to the fact that there are two accounts unless you do something to alert them that something is wrong.

I do think that you are reacting at lightning speed to the appearance or non-appearance of ads and that may well cause the G system to wonder what is going on.

First you place ad code on your site for one account. Then shortly after that you remove all ads of that account and place ads on the same site for two different accounts. Now you have removed those and now you are using ads under an account which you own.

Slow down, leave the site as it is and wait for a couple of weeks to see what happens.

Silly thought, did the OP switch to Firefox 42 in private mode? That would make all the adsense units just vanish.