Unable to view certain websites

[Major Tom]

I use Mozilla Firefox as my browser. Today I tried to lookup Frankfort Arsenal to check prices for their wet media cleaner.
I keep getting a window that wants me to change my browser and wants to know my location.
Has this happened to anyone else? About 3 months ago I did not have a problem like this! I cannot get that website!

[gwp]

It may be Firefox asking you to refresh to the latest version.

https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings

After the refresh, you will need to reset your home page and add-ons.