I was Business vision reseller and I am using my Client server edition version 2010-7.40 until May2023 which is my year end. I can not close my year end and proceed to June 2023 , please help advise me what should I do?.

Never use payroll and multi currency , choose Client server edition was for demo to potential customer back then. Currently downsizing and hope to carry on for another 3 more years.