All of your blocks are using the old system, which doesn't work with timeline blocking. Blocks were fixed to correctly set the user when blocking (happened about a month ago).

This image is what your (admin) blocks page looks like:

Notice all the blocks are inbound to yourself. This is because they're legacy blocks which didn't place user IDs properly.

This is what the block page should look like:

Delete all these blocks manually and then redo them (annoying I know, there was no other way though) and it should work properly.

I've checked the other users who commented before me here and it is the same case.