ZFR: In. This. Case. I. Suggest. Your. Solution. Is. Also. Same.
There. Has. Been. No. Solution. Offered. Jackass.
If the error is related to there being too much traffic, maybe the error message should be amended so that it doesn't incorrectly identify the problem. The eligible games I own on GOG but NOT on Steam ARE recognized, and to make matters even more incoherent, are placed under "ineligible" but not grayed-out like the others.
EDIT:
It did finally recognize the games I have on Steam. I still think something should be done about how the error is presented on the page, because it does not convey what is actually happening, or there should at least be a note added to the page. This is a feature being touted on the front-page, so expecting people NOT to be confused and even irritated when it doesn't function is naive at best.