If you are regretting having blocked a person and now you want to unblock it, or unban it, however you wanna call it, Tumblr allows you to do so. Here is a tutorial with step-by-step instructions.
How to Unblock Followers or other People on Tumblr.
- Go to Tumblr’s Block Page and see who is on the list ( it may happen that noone is showing up despite having been blocked, in that case reload the page, otherwise you will have to remember what is the username or URL you want to unblock).
- If the user does show up on a list, just click on the unblock button, it should go away, if it doesn’t click on it again.
- If the user doesn’t show up, enter its url or username on the form and click on block (I know it sounds contradictory), the user should now reappear on the blocked users list, do the same as in step 2.