[APP][Pro] Intergas Incomfort - Comfortable temperatures in your home

ok. so i have an intergas xtend. and have programmed (without programming knowledge) with gemini, an esp32 who connects to the xtend, pulls some known values from the xtend, and then connects to my wifi and provides the infos as an json to my home network. to have the intergas wifi enabled it needs a connection every 15 minutes, so it keeps online with the every 5 min check. it is also possible to build a esp-esp bridge when u connect them by com port. i also wanted to buy a gateway v2 but this should also work. anyone any idea?