I use Lefebure and the network of permanent stations in my region for RTK surveys.
Alpha+ client does not work: it does not download the data.
In the Mobile Topographer GIS software the values of PDOP, HDOP and VDOP are equal to 0.
Is it a problem?
This is because the UTM planimetric coordinates (X,Y) are correct, the altimetric (Z) ones are not.
For initial usage unable to get Alpha+ to work, most likely it’s due to some simple reasons. It’s better to send an email to firstname.lastname@example.org requesting assistance, instead of boring everyone in discussion group like this with technical assistance correspondence back and forth.
With RTK, don’t think these DOP values are of much use. It’s either getting RTK Fix centimeter level accuracy or not, regardless what the DOP values are.
From my experience alpha+ ntrip client app does not work with CORS sources, it works only with ntrip corrections from an Alpha+ Base.