The integration allows you to connect the accounts of "Subscription" or "Service" type, which must have status confirmed or verified.
Before the integration with WeChat you should do the following:
check that in the section Interface Privilege in category "Conversation Service" the items of the paragraph "Interface" have statuses "Obtained"
The integration's functionality has its specifics.
After finalizing all integration related work, message exchange starts working in 0-60 minutes. Such a delay is caused by internal business processes of the company of WeChat messaging app.