upstream connect error or disconnect/reset Error many times

[Truong668]

Hi Support team,

We in Vietnam, many users meet this error:

upstream connect error or disconnect/reset before headers. reset reason: remote connection failure, transport failure reason: delayed connect error: Connection refused

Even Reload the app, we can use the app, but a couple of minutes later, the issues happened again.

Pls check,

Thanks.

[Kenjiho]

Appsheet formula also has many errors.So confused.