The absolute best way to get an expired file is to bypass the expiration entirely. Since the file is gone from WeChat’s servers, you need a new copy from the original source.
If you had WeChat logged in on a computer when the file was sent, it may be stored in your local cache even if the "download" link has expired on your phone. how to download expired file in wechat
to check your file management folder for previously opened files Automatic Cache: The absolute best way to get an expired
The absolute best way to get an expired file is to bypass the expiration entirely. Since the file is gone from WeChat’s servers, you need a new copy from the original source.
If you had WeChat logged in on a computer when the file was sent, it may be stored in your local cache even if the "download" link has expired on your phone.
to check your file management folder for previously opened files Automatic Cache: