FAQ > Twitter Account Auto Management Tool ( "4Bots for User's Screen_Name")

The "auto-follow-back bot" used to follow-back all accounts that I hadn't follow-backed. But recently, the "auto-follow-back bot" doesn't follow-back all of them. Why? Any algorithm?

Surely, we know that our "auto-follow-back bot" hasn't follow-backed all of them. But our "auto-follow-back bot" has follow-backed all of the not-yet-follow-backed accounts.

So, we think that twitter doesn't accept any follow-back-requests that our "auto-follow-back bot" does. We infer from some cases that twitter doesn't accept the request for "suspend accounts", "accounts which similar to account that you blocked".

Aug 16, 2019: in Aug, 2019, we did a little experiment. Then, we found that Twitter didn't respond to our 4bot's follow-back requests for accounts that Twitter considered "purchased followers."
https://twitter.com/RainbowLinkInc/status/1162054512749662213