You may have inadvertently gotten "working on a remote copy" issue sounds like.
Usually when you can not send/receive that means that the local copy is no longer linked to the server copy.
Someone please correct this if I have mis-spoken.
...Bobby Hollywood live from...
i>u
Edgewater, FL!
SOFTWARE VERSION:
Archicad 22, Archicad 23
Windows7 -OS, MAC Maverick OS