Some Ip’s blocked some not

Hey ,

I had three small questions.

1. When i login to my site and look at the live traffic view i get alot of ip’s that say blocked by the Wordfence Security Network. I had one for example 19 minutes ago and one 50 min ago. the one that is 50 minutes ago says click here to unblock ( so this one is blocked? ) and the one 19 minutes ago says click here to block ( not blocked ? ) are they still both blocked? they both give the red mark with “blocked by the Wordfence Security Network”.

2. As following of first question, when i look at ip’s blocked from accessing the site they are only blocked for 30 minutes when in options I entered 6 hours. also they are only the ones i manually blocked? not the ip’s blocked by the Wordfence Security Network?

3. Should I permanently block those ip’s ? i am doing it now but it takes alot of time because I manage alot of sites all running wordpress.

Thanks
Dieter