You mentioned Overbridge; did you also upgrade OB when you upgraded to 1.30? There was a new release of OB as well.
Have you tried disabling OB and running the DT stand-alone? You mention disabling it as a troubleshooting step but don’t mention if you tried just using the DT by itself without your Mac.
Edit: Overbridge can be downloaded here.
Before you do anything else. Get the latest transfer app and backup your device.
Make a copy of the file. Rename .zip extension. Check that your sounds are in there.
Then stop using with computer. Make sure it works by itself
thank you 
Yes, thank you… Did do that and tried a few times to be sure. I just received a reply from Elektron. We shall see! Thank you!!
yeah, what’d weird is it’s only stock - not sure! Just got a reply from Elektron - I’ll report back and thanks so much again!
You don’t sound wrong ha
I read it is heavily not-advised
Yeah so they find it a little odd too and are looking into it but, hey, thank you guys all so so much!!! Really appreciate it
Ok, so the folks at the beginning were correct! Thank you again! Make a back up in transfer. This will take A WHILE. in addition, BE SURE to drag and drop the digitakt project file from the right hand side of transfer to the left, your computer. Then, factory reset it w FUNC + 3. After reboot, drag and drop back in all files from backup. Mine got a little glitchy on screen for a moment but then continued on just fine project intact. THANK YOU FOLKS SO MUCH!!
ah, so it turns out im a liar. woke up to same issue today - well see what elektron says - oh well… could be worse
Keep us posted Chuck. Frustrating but fingers crossed.