indeed  Reloading is the problem  STUPID  THX

Correct. It will seem to be gone until you click on Assets, then wait a few seconds (this is a key, because it looks blank for the first few seconds) and then you will see the button to let you issue it.

You likely have to issue some of it to your account.

It's still on the blockchain .. I can see it beeing created by "bts-subscribe" .. Maybe you ran into a gui bug .. Have you tried to reload the page?

i created an IUA Nobelprize (the first winner is ....)
just a short while the asset occurred on my account; and now he is gone?
How is that possible?