No transactions inworld possible today

Today I noticed, that two transactions from Linden Dollars on my avatar have failed.
I've lost alltogether about 19000 L$, because the balance at the other side was zero
and at me anyway were no Lindens Dollars from this transaction ingame arrived.

The issue above has been resolved, it was a common error with transactions.

I could not login last two days on most locations. The most areas are still down.
Why there is issue resolved and grid online if there is nothing working actually?
Teleporting and search are off too.
In my region disappeared yesterday half Sim for a long while and all changes on Sim
from a few hours were lost, as well an item what was put out of my inventory disappeared.

What's up now, can anyone say? Are there similar issues for others?

Yes, there are similiar issues. I would advise against purchasing such large and/or expensive items.

Try iming the seller and trying to get the items