How do I setup my own router with Internet fiber service?

[news]

[wireless]

Here is the situation:

I would like to use my own router-a synology rt1900ac.

I used this router with a telus fiber modem for the past month or so without any problem. However two nights ago we had a service outage in the area and after that my synology router drop out connection every 10 mins. If I disconnect the wired WAN cable and reconnect it to the router it will re-connect to the internet for around 10 mins than drop out again.

This was not a problem until a service outage in my area two nights ago. Was there some setting been changed on the fiber modem side that has not been received by the router?

The only thing I can find that's missing in my router's ISP settings is:
Hostname
DHCP client ID
DHCP client option

Could this be the problem?

Thank you


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