If automatic subscription does not work, you can subscribe to a calendar manually.
On the Kalendáre page, select a calendar you like.
Click Vybrať.
If you are not logged in to WebCal.Guru, you will not be able to modify subscription settings and you will have significantly smaller selection of calendars. In this case, jump directly to Step 4.
Adjust the subscription settings if needed and click Pridať do mojich kalendárov.
You will be taken to Moje kalendáre page. On the calendar you just added, click next to Stiahnuť and select Skopírovať adresu do schránky.
On the home screen of the device, tap Settings.
Turn the device to portrait orientation, scroll down to Calendar and tap it.
Tap Accounts.
Tap Add Account.
Tap Other.
Tap Add Subscribed Calendar.
Tap the empty input field.
Tap Paste.
Tap Next.
Tap Save.
Updated 8 Feb 2023