Steps to confuse a flexus card.
Have a ticket due to run out at 21:39 2nd feb
Add a new 30 day ticket on the 1st feb
Go to UllevÄl Stadion on the 2nd at about 19:00
All validating machines "No valid ticket on card"
Payment machine shows both active ticket and new ticket and can in fact print out a receipt showing so
And there we have it - I'm confused.