Frankly, that's the company's problem. Personally, it's much more annoying when startups name themselves with intentionally misspelled words. Optimizely, Musical.ly, come to mind right away, but there are loads of others.

The only reason this is done is so they can advertise on Google Ads without running afoul of their "non-branded terms" policy.

It will take a lot of marketing to overcome this fact. "Glass" is a fine name that helps while you're taking in the features/benefits, but it does not help at all with retention.