Hello and welcome @_TIS_RuneZ
the base got deleted because it had less than 10 blocks on it. The server setting “Decay” triggered in that case.
Sorry, we can’t restore such micro bases either. Since you two have over 14-22 million credits in your bank from the Tank Rush event I’m sure you don’t have to live that poor anymore and think in bigger dimensions.
Thanks though, good luck and enjoy your stay!