@kuriko

Thank you for your response.

I did this step by step.

Deleted

record.json res.json

After pushing the code, the problem remains the same., error 403

So I Reburn the Core2.

After pushing the code, the problem block on Sync screen, error 403

I think there is a problem accessing the file bucket on Alibaba.

Or else the load transmitted by mqtt to the device is not what is expected for res and record json.

Similar of:
https://community.m5stack.com/topic/7652/uiflow-2-0-sync-error