Sorry to read you are having an issue with your broadband connection.
Looking at your connection, the line and hub have come back as fine. The are no faults reported and the traffic on the network is running low, which is good.
With the disconnection you mentioned (flashing lights), can you post the network log from the router settings for us to check over please? To do this type in 192.168.0.1 in the address bar, no need to sign in and click into Check router status. Within here you will have network log and you can copy and paste this information.
What speeds do you achieve during peak hours? Can you complete a speed test through a wired connection please?