Troubleshoot Router reboot when clicking on Amazon login

[ForgottenSeer 69673]

A week ago my internet went down and found my router password had been changed. After fixing that I found out today that when I click on Amazon login, my router reboots. I tried 12 times. What could cause a router to reboot when clicking on a login link?

 

[Kongo]

The first thing I would do is resetting the whole router. No Idea what could cause this, but just to make sure.