Thanks for your message and sorry for the possible troubles.
Do you have a credit card?
Then you can try that method - as then hopefully there will be no problems with Paypal.
Please try this direct link at our financial partner Share-it/MyCommerce:
If this does not work, you can try our different partner Avangate/2Checkout:
In any cases, you'll initiate the order of Hard Disk Sentinel Pro Family license:
you'll receive a license code (15 digit) which can be used for Hard Disk Sentinel Professional on up to 5 computers. The license grants lifetime use and free updates to all future versions, so there are no further renewal / subscription / update fees.