Unknown Visitor but known contact

Hi,

So,.... this is either a very dumb question or something is actually wrong. I was testing a tracking script with my client because I noticed there where slight adjustments to the default script. One is described in the official documentation (advise to replace the last lines of code due to GTM). But one minor change is that the script uses this URL:

s.async = true; s.src = '//img06.en25.com/i/elqCfg.min.js';

while the default script looks like this:

s.async = true; s.src = '//img.en25.com/i/elqCfg.min.js';

Could this hurt? We are on pod 6 by the way.