CMS Collection Template issue

(Newbie question)

Screen Shot 2022-04-11 at 16.58.08

These 2 templates were automatically created.

On my start page I have a number of events. I added a Link Block. When I try to set a link page, this is what I am being offered:

Screen Shot 2022-04-11 at 16.57.45

What might have gone wrong?

Thanks