In order to start a valid foreclosure against your unit, the association must have properly notified you (via certified mail) of its intent to lien your property. You should have been provided 30 days to cure the arrears. If you failed to cure within that 30 day window, the association then needed to provide you notice (via certified mail) that it would foreclose if the outstanding dues are not paid within an additional 30 days. If the association did not follow this procedure and you can demonstrate you tried to pay before you were in default, you likely have a strong defense to foreclosure.
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You need to hire an attorney. It sounds like you have a solid defense to the foreclosure and maybe even claims against the HOA. Good luck.
My answer to your question does not create an attorney-client relationship.