Questions about Intex Pool heater

I installed the heating yesterday. Everything according to the instructions. But somehow I have the feeling that it is not heating properly. It draws electricity but the water from the heater feels like there is a 1° difference. How is that with you? How warm does the water get? Thank you

How do I plug this safely in a Swiss 10a socket please? Do you use a converter or what? Thank you for your help!

There is a switch on the plug, which must always be pressed again after switching off so that the heating can be switched on again. This means that PV-optimised operation using a switched socket is not possible. Is it hypothetically negligent if I disconnect the plug and replace the whole thing with a 3-wire cable connector designed for 250 volts? Then it should work PV-optimised All cables and plugs are in a watertight box. Thank you for your support.

Can the pool heater be plugged into a normal Swiss socket?

What kind of plug does this product have? Can I connect this heater and the pump to the normal socket? I assume this is just a heater, without a filter pump?

The heater has an output of 3000 watts. However, Swiss sockets are fused up to 10 amps with an output of up to 2300 watts.... Won't the fuse blow permanently or will the socket burn out?

Do we leave it on all day? How long can it be left running?

Does the pool heater come with hoses? And how strong is the pump?

How many Kw does it use?

Is this pool heater compatible with all Intex pools?