Do what it says. Stop sending out so many requests in a short window of time. The error is self explanatory.

Originally posted by ICOURTNEY:

Hello, I have had this problem for a month. When I try to add friends, I can’t.

Add Friend

It looks like you've sent too many friend invites. To prevent spam, you'll have to wait before you can invite more friends. Please note that other players can still add you during this time.

this my problem

The cooldown varies from 1 week up to 1 month.

Have them add you instead.

Read this post that explains a little bit of the new restriction...

https://steamhost.cn/steamcommunity_com/discussions/forum/0/2299597907734477316/?tscn=1591660294#c2299597907734515946

The cooldown has many variables for when the account gets this message. No 1 account is the same in this matter. Some will get it after 1 invite, others 30.

Spam and scam protection like this was added for a good reason.

When you send out too many Invites, the system thinks you are looking to scam other users.

So there is a limit on how many invites you can send out.

And to be honest, if your not going to play games with those users, don't waste your friend list space with random users.