@Clive_A Thanks for the helpful info. I may buy a CA certificate eventually. Do you have any theories on why it takes 1-2 minutes for the login screen to load in Chrome but in FF it's immediate? This...

I found a work-around. If I use FireFox instead of Chrome it still warns me the router's login page isn't secure, but after I click through the "do it anyway" buttons the login page loads lightning...

I've been running an ER605 on the original firmware, v1.0.1 since 2021 with no issues. Recently I wanted to start using one of the Dynamic DNS services and decided to upgrade to the latest firmware...