"2.14. Actions not prohibited/restricted by these rules are permitted." The fact that there was no access to the center was confirmed after the first week. There are no grounds for a technical request under the current HeroesWorld rules.
There are plenty of situations not described by the actual rules. What to do in such cases? - Negotiate with your opponent. If your common sense differs, then consult with a judge and/or the Arbitration Committee.

