It should be that you have not enabled adding friends and need to pass the verification.

How to turn on the friend verification function?

Open WeChat and click "Settings".

/iknow-pic.cdn.bcebos.com/4ec2d5628535e5dd2a613eb17bc6a7efce1b620b"target="_blank"title=""class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/4ec2d5628535e5dd2a613eb17bc 6a7efce1b620b?x- bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="/4ec2d5628535e5dd2a613eb17bc6a7efce1b620b"/>

Select "Privacy" in the settings interface.

/iknow-pic.cdn.bcebos.com/8b82b9014a90f60339b507293412b31bb051ed53"target="_blank"title=""class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/8b82b9014a90f60339b50 7293412b31bb051ed53?x- bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="/8b82b9014a90f60339b507293412b31bb051ed53"/>

Verification is required when adding me as a friend " of Just turn the switch on.

/iknow-pic.cdn.bcebos.com/d52a2834349b033bc11567b418ce36d3d539bd3b"target="_blank"title=""class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/d52a2834349b033bc115 67b418ce36d3d539bd3b?x- bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="/d52a2834349b033bc11567b418ce36d3d539bd3b"/>

Reference: /kf. qq.com/faq /161223MnERJb161223vUviEv.html"target="_blank"title="Only supports selecting a link to take effect">WeChat: Help and feedback: WeChat settings need to be verified when adding friends