I've been trying to access my electrum wallet for two days now, but to no avail. It shows the status "synchronizing" forever. I tried it on two different computers, deleted the wallet file and reinstalled the newest version, connected to different servers and tried a different wifi. Now I'm out of ideas. Can anyone help? Thx!

Some more details: I'm using the mac version. I sent BTC to this wallet yesterday. Strangely, this tx shows up as "+0." in the transaction tab and cannot be right-clicked. In Blockexplorer tx shows up correctly. Just did another test tx which went through smoothly. But I can not see my total balance. Status: Synchronising...