Thank you so much for all your patience.

I generated new masterkey/key via steemworld but access denied.
Used the 'old' (yesterday's) masterkey to get access to steemit.com and could change all keys there just no access to the public which I found with help of steemworld.

Next I could use the posting key, post but posts and blogs remain empty as if the account is still blocked.

Could only unpin old contests (shows) but posts resteemed aren't visible.