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1Password not working on Firefox for Mac?

I am currently running Firefox 55.0.2 on an iMac with El Capitan operating system.
I find that 1Password no longer works.
I have had multi discussions with agile Bits who put out 1Password, but they cannot figure out the problem.
I think it may have something to do with Firefox banning Java, but this is only a guess.
Anyone have any ideas?
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