I have Auralic gear though the Aries G2 and Sirius G2.1 processor. I had the Vega G2.1 DAC as well until I upgraded from there - but it was quite good and fully competitive with other $7k+ DACs.
I mention this because i don’t have direct experience with the Altair line though I understand it to also be quite good and competitive with similarly priced units.
It’s possible the “click” or “tap” you’re hearing is the unit switching to adjust to different file formats or bit rates available on many Qobuz streams.
You asked about their support of their software. I find they upgrade continuously - and do so automatically and seem to fully support older units in this regard.
I think the units are well made and supported.
You might find helpful information in the Auralic community forums: community.auralic.com. The president of the company also frequently responds to support requests and questions. It’s a good company with enthusiastic users.
Best,
Mgrif