How can i unblock friends?

How can i unblock friends i blocked my friend and now i can t unblock i tried adding again but it didin t fix it can i get some help please?

Hi (sry for my English),

in epic games click on a friend in social settings find “Hide blocked players” and click on it (now must have it grey color).
Now find your friend and click on him and give unblock.

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go onto your friends and click hide blocked players and click on him unblocked and befriend him

It won’t it me there name doesn’t even pop up there so idk what to do so fix it please