Did you by chance purchase a multi pack?
We purchased a 16 pack 2 months ago and had a mixture of bad ones mixed with good ones. The first one we opened was a dud, seriously bad when test viewing, so we assumed they were all bad. However, when we kept opening the rest, we saw that they were manufactured in various places: Paper Optics/TN, England, China, etc. Because they were mixed manufacturers with duds in the lot,
Amazon recalled them. But it doesn't mean they were all bad. Hope this helps someone!