Try reading what we have been telling you! You said "Nobody can transact". Have you tried moving coins to another wallet, or buying coins or selling coins at an exchange? Works perfectly. If you don't pay attention we can't help you.
my wallet does not sync and obviously the blockexplorers neither. So has there been a hardfork or what? Try talking clear english straight forward. Thanks.
Okay, let's start with clear English. Your spelling and sentence structure are incorrect!
I have a number of Megacoin wallets, and all of them sync just fine. Is the machine you are trying to sync connected to the Internet? Did you allow the MegacoinQT client access through the firewall? Are you buying or selling from an exchange? Please read the previous posts again if you can't figure it out...
If I install a new wallet, it downloads the blockchain at blazing speed. If I send coins to another wallet, or exchange, it is also lightning fast. Not sure what you are doing wrong? I would suggest asking one of your friends that is better informed to help you.
Was able to sync briefly. Now 1 hour no new block on the network. Is megacoin attacked or did something brake down?
The blockexplorer shows clearly blocks aren't produced at normal speed. https://bitinfocharts.com/de/megacoin/explorer/
There are bursts of blocks and hour long delays in between. I guess we need an update, huh?
Don't play dumb btw as if everything was fine. It's not. Anyone can read the bloody explorer.
Second one:
https://coinplorer.com/MEC
I hope we'll hear from devteam soon.
Very large multi-coin mining pools have been moving in and picking off easy (low-difficulty) profitable MEC blocks. As they do that, KGW ultimately retargets at a much higher difficulty, causing the mining pools to move on to a different coin. You could definitely call that an 'attack' on the coin, but each time it is mitigated by KGW. Unfortunately when the big pools move on to something more profitable, the difficulty is left much higher than normal, and it can take quite a bit of time before you see the next block solved. Once that happens however, KGW then drops the difficulty drastically and at the moment the entire process repeats itself. Big mining pools detect the new low difficulty and move back in.