Just wanted to give a quick update about this, because I see other people in this forum having problems with blockchain: I saved all my private keys in all my blockchain wallets, after having the initial issue which I described in this thread. So after all I'm not worried anymore about losing any coins, BUT I really need to tell everybody, to stay away from blockchain.com/info
This website has definitely a very strange behaviour. After working months without problems, now the "Send" Buttons on the main page of all my wallets which have quite a good amount inside have disappeared. So currently I'm not able to send any BTC from the website anymore. This happens with different IPs, Browsers and even with different wallets. It seems not to be a general bug, because I couldn't find anyone having the same issue right now. Call me paranoid, but I'm quite sure blockchain is trying to avoid "some users sometimes" to send their coins....

Best Regards