Can't Verify Blockland ID

[Cypthon]

This keeps getting on my nerves, when i try joining some servers, it says Can't Verify Blockland ID
Help me now 

[Ad Bot]

[Sebi]

Is it like you can't authenticate to the master server?
like me?
Or it doesn't recognize you're id,
either way I don't know how to solve it but i'm still wondering, because of the first one happening to me. If its happening to anyone else.

[Bow]

This keeps getting on my nerves, when i try joining some servers, it says Can't Verify Blockland ID
Help me now 

Probably another computer is running blockland with your BL_ID logged in.

[Clone2]

Probably another computer is running blockland with your BL_ID logged in.

Even if another computer was, it wouldn't matter.
I used to share my account with my brother and we'd often join servers at the same time with no issues.

[Dannu]

You can use the same key within the same internet network. It's probably that someone else is using your key, contact Badspot.