Hi there,
Guys, thank you a lot for all the shared info! Agree with you.
@KN1, to get centimeter-accurate coordinates, you need a base and rover setup. It may be a single Reach RS3 with corrections from NTRIP as Dave mentioned. The workflow is described here. Or a pair of Reach RS3 to place one as a base and use the second as a rover. This way, you can transfer the corrections between the receivers using free Emlid Caster in areas with good cell coverage or using LoRa radio in areas without the internet.
Oh, and I agree with Tim: it’s a good idea to return the default settings.