Why is KPM affecting the prices displayed on this website?

[Polaroid44]

So whilst browsing Testermans.co.uk I noticed the prices were hugely inflated. With KPM enabled in Firefox and Edge prices are crazy and simply disabling the addon reverts them to normal.

 

I have tried clearing the cache etc and reinstalling the addon but it persists? Would like to get to the bottom of this! I tried contacting the website developers but they could not recreate the fault and seems to think it’s a local issue.

 

If anyone could test this out and let me know if it’s happening to anyone else it would be appreciated! :)

 

just click this link to test : "https://testermans.co.uk/product-category/electrical/electrical-testing-equipment/multifunction-testers/multifunction-tester/"

 

Examples below, prices of exactly the same item with KPM disabled/enabled

 

 

[Berny]

@Polaroid44 Welcome. Kaspersky is not related with this issue that I can’t reproduce.

[Polaroid44]

Any idea of settings that may effect this?

 

I just tried reinstalling the KPM for windows, still does it.

[Berny]

@Polaroid44 Some Web  Servers can detect VPN connections  , please continue with the  website developers.