The form is on the bottom of the page:
https://pgedystrybucja.pl/strefa-klienta/informacje-dla-konsumenta/zdalny-odczyt-na-wniosek-klienta
For hardware and software I have a question. What is that device on the ethernet cable with the pendrive on the left? Is that an Orange Pi or something similar? Then likely an RTLSDR would be a good option for you with wmbusmeters. As you have half of the hardware, if I guess right.
https://allegro.pl/listing?string=rtl%20sdr&order=p
If ESP based, then there is a topic about the WMBUS readers, a forum member builds them and sells them on OLX. But you can build your own as well, as the code is ESPHome based.
Again, developed by a forum member.