But these diallers have this issue
Sometimes networks does this , seen it many times , your pressing the button but it's not stopping and them suddenly it will work
Gdpr was continued from data protection
And no it wasn't Germany and UK mostly .....
But as said it's not going away because already rules put in place on exit that laws are adopted and may or may not be amended later
I suppose if it's all you can have then looks good on the wall with your own background lol
But there touch screen sensitivity rubbish , need cleaning often to keep it in place
Get another engineer , plenty about and easy to deal with basic system.
If your planning to do it yourself , unlikely you come under competent diyer because this panel with its manual can be done by a competent diyer
In anycase get a local engineer will be cheaper
Probably cheap version
I seen allot of those now , main issue is combined unit , tap fails you can end up losing the whole thing , the seperate version looks better with same tank