You can find out when winter stays can be booked on https://www.uk.travelski.com/, and that summer stays are not offered there.
Winter stays
Stays for the winter season start to become available for booking in March for the following winter. The catalogue with the offers opens gradually until August.
On https://www.uk.travelski.com/, the availability calendar opens according to what is available at any given time. Between March and August, some accommodation may therefore not yet be open and available, because its availability is still being opened. Please repeat your search.
After August
Once August has ended, the availability calendar for winter is open and all available accommodation is on the site. If an accommodation is not available on a date or for the whole season, it is not available at all.
Summer stays
Stays for the summer season are not available on https://www.uk.travelski.com/. The summer season is not offered on https://www.uk.travelski.com/.