Steam Connect Failed

This happens to me whenever I use cheat engine. To get past it, click online play then wait for it to say "steam connect failed", then click online play again and it should load your profile. This works for me everytime

If you used hack on shared account both can be vacked if not don't worry about that, steam vac status may not to be updated but will incoming soon if you are really banned. Recently was patch to resolve steam issue that was showing wrong "Vac ban" message when they can't reach your stats, maybe the issue is still there but not show up message.
Sometime is only connection issue, so after restarting steam run "single player" start campaign and go back to main menu and from there run multiplayer...

yes on both acc