Xero is cloud-based accounting software that is basically deals with accounting and bookkeeping services. To activate the software, one needs to take the Xero subscription, and once the payment has been done and completed, then you can start accessing the software. But sometimes, problems occur in this scenario. Sometimes, there occur payment issues, when you are asked for credit / debit card updates, etc. You need to identify the issues that are true for you and look out for the solution. You can always dial the Xero customer support number and approach to the best option possible.