Welcome to FT.
I have to be honest...this is a little bit of an ask from a first-time poster, and I apologise if that comes across as harsh. Helping to unblock Wechat accounts is meant to be done by actual friends/ acquaintances...which we clearly aren't.
The more important question is why is it being repeatedly blocked? That is highly unusual in my experience, and more information may help solve the issue longer term.
All the best!
tb