Diễn đàn hỗ trợ Firefox

I have been using Easy Screenshot for years. Today I tried taking a screenshot and it opened a huge copy of the rectangular image I wanted to save in a new tab. Then there was no visible way to save the image. I used to get the option to save the image file in the same tab as the image I wanted to save. Took a screenshot and saved in Paint to show the contents of the Firefox window that image is huge and should have been 4 inches wide at most. Also the lack of how to save the image.

I'm wondering if this a because of the latest update. Firefox 147.0.1 X64 desktop WIN10 22h2 with ESU

When I tried reporting the problem on the add-on page the website it tried to connect to was not working so asking here for help.

https://mozilla.com.cn/addon/325-easyscreenshot/

For clarity, I am based in the UK trying to shop from the co-op supermarket which is based in the UK.

I am getting an access denied message with shop.coop.co.uk, but not with any other UK online shopping site.

I have tried all the usual suggestions like reboot, clear cache, remove proxy, and I do not have VPN.

I have downloaded the html of the message, and taken a screenshot of it as shown below. Looking into the html, there are references to Incapsula, which may suggest where the problem lies?

This problem started when I had to change my Virgin Media hub from Super Hub 2 to Hub 4 around July last year.

One suggestion that is often made is to delete cookies. However it is not clear which cookies may be relevant.

Any ideas on how to identify the source of this issue will be most welcome.

Geoff