The Board of Directors of our HOA has breached our own BYLAYS by allowing a NEW buyer (investment) to retain the tenant that has been leasing the unit

A unit owner who has been leasing he unit for10 years is in the process of selling her unit to an Investor, The listing had this sentence "Tenant would like to stay if Investor Purchases" Our BYLAWS say an owner/purchaser must own the unit for at least 8 months before requesting to lease said unit. The Board of Directors is allowing this new owner/investor to continue with the "permission to lease" the seller had in place. I said a new owner investor or not must own the unit for at least 8 months before requesting to lease it. This wording is written in our bylaws filed with the town of Manchester Ct. Allowing this NEW owner to simply continue with this "right to lease" is a breach of our bylaws and I want to stop them from doing this. We have an 9 member board of directors however 5 members have quit so there are only 4 left and I don't feel they aren't operating in the best interest of the Association. Also for four years this tenant has been violating our rules and regulations.