It won't let you click?
The file is there though? I mean, it can be seen in the save slots?
To be fair, I've never heard of this issue before. Are you playing the online version?
I see
It definitely has to do with your browser, since the save files are linked to that browser. This is the first time I see this kind of problem (some people have lost their files after deleting cookies, but seeing the save file and not being able to access it? That's very weird). Also, if you're using incognito mode, that might have something to do with it