You can cancel on the standard rules

Bought without plus insurance
85% of Standard Passes
Promotional Pass non refundable :/
 

if you bought the plus option you can cancel
100% of Standardpasses
85% of Promotional passes

Last year they offered as Covid was new that you can travel later exchange the pass for a new one with later traveldates If they offer it once again is their own decision :)

Hi, refund requests can be made via your account on our website. If you have purchased a standard Pass, you will get 85% refunded, while 15% is retained as cancellation charges. In case Plus was purchased together with the Pass, a 100% refund will be granted. Note: Plus is only available during Promotions, and costs for Plus are non-refundable. For our full refund and exchange policy, have a look here.