WiFi LoRa 32 (v2) only receives 67 messages with a difference of 5 minutes between messages

I have used the basic code for the transmitter and receiver. Sending messages with an interval of 5 minutes, but the receiver only receives 67 messages and then stops receiving (about 5 hours and 30 minutes works). Then I have to restart the receiver again so that it receives the messages again and again at message 67 it stops receiving.
I already tried changing the time interval to 10 minutes, but it still shows that error.
I don’t know if the module goes into sleep mode or if its memory is saturated.

Can you post the code and errors?