Hello Michael,
actually, if you didn’t read it please, look through this document now https://supsystic.com/terms-and-conditions/
But please, do not be worried only even when the term is expired – you get your pro version, but will not get the updates and support. If you want to prolong it – please, but the prolong version for one year.
If you are sure, that you bought it less then six months ago – please, contact us through internal support and provide there an email, from which you bought the license. The link to your site and wp credentials – for us to fix f really smth went wrong! Best regards!