Pedro
I do hope your lawyer has done due diligence and checked on any debt attached to that apartment and obtained a debt certificate from the Community Administrator.
if he has done this he should most certainly informed you of all the fees and charges payable to the Community and Entity as well as IBI fees to San Javier Town Hall.
this information would come from the Community Administrator, Resortalia who handle all fees, communication and details for the resort.
IF you have not been provided with these details I suggest you urgently contact Resortalia in Los Alcazares.
email roda@resortalia.com. Tel. 0034 968104710
They will supply you with all information necessary for the Community and Entity but not utilities.
Generally all communication including newsletter and invoices are sent by email but they will require correspondence address from you as well as setting up dds for future fees.