suddenly we get zebra printer error due to untrusted certificate

Question

We just realized that we cannot print correctly our labels, using the **gc420t **printer.

The problem:

All our labels, are printed as if the code instructed it to start on the left of the label, way too far from the label's center. Thus we get labels that are half printed, only what is on the left of the center gets printed. We tried to reinstall everything. We calibrated the printer. But even the test page gets printed in the same way, only the half of the text is shown, and only in the left of the label. All text that starts each row, is truncated in the left side, in the beginning.

The setup process is like:

1. install the printer drives 2. install zebra browser print (zebra-browser-print-setup-1.2.0.3.exe) 3. https://localhost:9101/default?type=printer(link is external) and we accept the certificate

During the process, in abve step #3, of reinstalling the printer, we get the following error:

This CA Root certificate is not trusted because it is not in the Trusted Root Certification Authorities store.

Could someone please with some thorough guidance give us instructions on how we should fix this issue?

Should we set the printer back to its factory defaults? What drives should we use? What are the latest recommended for windows 10 pcs? (A link would be highly appreciated) What could be wrong with the certificate? How could one solve this? What other steps (in detail if possible) one should follow, so as to be able to print the labels like they used to be printed? What is strange and i would like your help, is why without any other modification from our side, labels are miss-printed since yesterday

We have tried reinstalling the printer, calibrating it, but no success.