Shower bracket fixing

[Zeesh]

I purchased a spray/shower kit from ebay to fix it to one of my sink cabinets. The attached photo shows everythig I got with the kit.
I believe I am missing a fixing or two to the bracket 1 in the photo. It came with a circular plate "A" to be fixed to the outer surface of the wall/cabinet. But there is nothing to hold it from back of the wall!

I have asked the seller and frankly speaking he wouldn't help as he doesn't know either.

Can anyone help please? Thanks.

 

[just pumps]

Open a dispute as parts missing and return it.

 

[Madrab]

If that (a douche) is to be used after the toilet is used and is planned to be connected to the mains water supply, then it won't be approved and breaks UK water regulations.

That being said the diverter valve (1) would connect to a fitting that would be fitted to the the supply pipework from the thermo valve (2)and are readily available from all plumbing suppliers. I wouldn't think it would normally be supplied as part of that kit.