Wow that's bad. I bought a few of those when I first got my C7. I found they were really poor repeaters so changed them for Fibaro models - I'm glad I did! I have a washing machine plugged into one of the Fibaros without issue and their website shows one used for a washing machine on the website.
The only issue I've found with the UK Fibaro outlets is that the switch seems to fail. It'll switch on/off by command normally, the button is functional when used for inclusion/exclusion but it just won't manually turn the outlet on/off.
I am very unhappy with the EU version of Neo Coolcam ZWave plugs, I could not configure my 2 devices to send the automatic reports only as frequently as I need. They were flooding my Zwave network with unnecessary VoltageMin / VoltageMax and other useless readings too frequently, definitely affecting the other Zwave devices that I actually need. Both ended up in the junk drawer.