I cannot understand why a professional organization continues to make a product that is not compatible with Mozilla's updates nor Microsoft Edge, two of the leading browsers used today. For a while back, Nimbus was an add on of choice for working with creative solutions, but now its developers cannot keep up with the evolving world of the browsers that they could once support.

Do not install this on Mozilla Firefox or expect it to work with Edge, unless you are forced into using Chrome, which I do not and will not use.

So I guess they are willing to forfeit market share and continue to argue with users that their product simply does not support the rapid evolving world of browsers, Maybe their company is destined to fail due to their lack of responsiveness to the market...who knows, but you may find that there are compatibility issues now or later since they don't seem to be so interested in keeping current with their product!