If I'm being blocked from these sites, can I unblock? Thanks.
If the website endpoint blocks Tor users, it seems to be almost impossible, but there's an option : take a look at SSH tunneling and take a VPS for such purposes. But if they've implanted a persistent cookie(like Evercookie) to your system, then it will not help you either. And there's an optional check : if the website side is not parsing Tor public lists of outpoints - it can be possible to obtain an exit node that is not publishing a standart "I'm an exit node" page