I could not find my balance MGO
In the wallet WAVES ?
help

Well if you have MGO in your Waves wallet it wouldn't be hard to find. The real version is called MobileGo Token and it has has a green check mark next to it because it is a verified asset. Verified assets show up first under the Portfolio tab in your wallet. So first make sure you are in the Portfolio tab (click on the second tab from the left on the top of the page...it is a little briefcase-like icon). Your MGO tokens should show up there as one of the first few listed. If you're not seeing it, you may need to contact Jack, the community manager here, to make sure it was distributed to the right wallet. Good luck finding it. Hopefully it's already there.
Yesterday was available MGO
Today there is nothing in the balance ! WHY


Well, one thing I can assure you is that your MobileGo is safely in your account. So you don't need to worry about that.
You can check for yourself by going to
http://www.wavesgo.com and entering your address in the top right hand search bar.
WavesGo is the Waves blockchain explorer and it gives you up to date information about everything on the Waves blockchain. I can see all 1,391.41 of your MobileGo Tokens are safely sitting there right now. They are not lost.
What you are apparently experiencing is the fact that the Waves Dex is currently having some problems. This is a known issue and it is affecting almost everyone. Others have reported not being able to see their assets in the Dex. I understand they are working on it and I heard it might be resolved as early as tomorrow.
So don't worry. Your coins are safely in your account as you can confirm on the blockchain explorer. Maybe join the Waves Slack (except I forgot it's not open right now due to some community voting projects). Maybe the best place for you to keep up to date is on the Waves thread here. There are several good Waves team members who monitor it and can give you updates as to when the Dex will be working again.