Frequently adding friends/calling/sending
messages may cause disturbance to other users.
① Please retry next day when you reach the daily limit;
② If you have been reported by many people recently,
sorry that it may be forever banned due to harrassment.
Note:
1. Mutual contacts may enjoy freely chat and call.
You may contact him/her via common friends/group.
2. Pornography, fraud, counterfeiting official
account, military, bloody, terrorism, cigarette
and drugs, gambling, intensive phobia, etc. is
forbidden.
Details of imo guidelines:
https://imo.im/policies/community_guidelines.html