lol ok its stating it has now synced, but as soon as a transaction comes to my wallet it syncs again very strange
Try monitoring your blocks for a bit and if it looks like its not syncing properly, download the latest snapshot which was uploaded today
https://github.com/xenonflux/1337/releases/download/v1.9.0.0/1337-snapshot9272017.zip. I am looking for a robust way to deploy all the files to the correct locations in future so that you dont have to deal with them manually.
Some days ago I thought, the wallet was finally synced successfully (because the block height was the same as shown at cryptoid). Unfortunately, today I figured out that the wallet is still out of sync and I finally downloaded this latest snapshot.
Now... my wallet is still out of sync (stalling since hours at block 1070075). Furthermore, my complete wallet balance is 0. But when I call "getaccountaddress" and check the balance of the address returned at cryptoid, it tells me that there're millions of coins on my wallet. Hence, the wallet.dat file is still the correct one... but even -reindex doesn't solve the problem

So... what the hell is wrong with that version??? What...

To be honest... the snapshots are pretty cool - thanks. But it's no solution for myself because I want a coin that syncs automatically. I don't need a coin I need to sync by downloading the latest snapshots every day and try to sync.
I've compiled version 1.9.0.0 from the github source multiple times (on my Ubuntu 16.04 LTS), replaced the snapshots 3 times and at the moment I've 115 connections. But I've no ideas anymore and if the problems aren't solved in the next days, I will remove it from my fullnode I ran since almost 1 1/2 years.
That's absolutely terrible.
All the other coins I've a running without any problems since months... (like 1337 before version 1.9.0.0)...