I am signed in to my account via the web site. When I go to either "To-Do List" Sort & Filter All or "Ticks" View All, either of those take me to a 404 page can't be found error.
I've tried this on several browsers and reduced security settings, but no luck.
(Ultimately, I would like to download my ticks and to do if possible.)
On the apps, I can see all the ticks and to-do, but don't see a way to download them.
Try changing your profile first name and last name from a dash to some random letters and see if it works. The URL doesn't seem to work when you just use a dash for your name.
This is how it currently renders (note the double slashes between your numeric user ID and "climb-todo-list"):
It needs something between those two slashes, like this: