Hello ​@kang ,
Which channel are you using, and under what circumstances is this issue occurring?
In any case, to contact the support team, please use the link below:
https://help.manychat.com/hc/en-us/p/get_support_page

​@rogerioaraujo I have the same issue, and your link send me to Q&A web site.

Not able to solve the issue neither contact ManyChat supprot

Please help me