There should be no problem with Firefox. I use both Firefox & Safari w/o problems. For comments, there has to be a comment entered. After signing in click browse, then click me, then click through your photos. From your photo, scroll down & If there is a comment, it will list the # of comments above the comment box and at the bottom of the comment box will be your comments. You can enter your own comment by clicking inside the comment box & typing it.
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