No metrics appears

Visualize data in Grafana sending metrics to Prometheus

I used to send metrics without problems, I tried again after 2 weeks and without changing anything I cannot receive any metric because I have connection problem. I do not what happened. WiFi is OK and ESP32 too

Two weeks ago was like this:

I stopped measuring and restarting again today I do not receive anything.
Do you know what might be happened?

Thank youuu