Do I have to connect my dac to my computer?

I have it working now and it can be a stand alone streamer

It may not suppose to be used as a stand alone streamer still trying to figure it out

No I have the Older transport

The Lampizator site has a “Superkomputer” listed.  Is that your transport?  It looks like it is supposed to be used with Roon software.  Perhaps you need to download that to stream Tidal.
Roon offers free trials.

No. Transport -> DAC-> Pre/Amp

if you want to stream tidal from your computer then Yes. Computer must be connected to DAC. So in the above chain just replace transport with computer. 
You can have them both connected to most DACs