46CHF is the price of a ticket with Half Fare Discount. So did you when you entered your personal details select that you have the Half Fare Card?
If you had selected “no discount cards” then you would have been offered the full price ticket at 92, but possible also a Saver Day Pass.
Note that there is no need to buy normal point to point tickets in advance. The price is the same regardless of time of purchase, and you can buy tickets up to the moment of travel.
If you have created an account on the website before buying then just cancel the ticket, start the purchase process again and make sure you do not select a discount cards. You should be offered a point-to-point ticket at 92,- but quite probably also a Saver Day Pass at a lower price. Get that, as that will save you money.