For issue #1, you don't have to select 2 days, just click on "go" where by default it says "last day". I think vB made it like this, so the page won't be too long if you have many subscribed threads, and whish to access your profile page for things other than viewing subscribed threads.

Issue #2, not sure, sounds like a bug and I'll let vB know about it if they don't know about it already.

Wa'il