Hello,
I have the same issue with the forum rules.
I got a link to a forum post and need to send a PM to the author, but the requirements you mentioned are preventing this.
So, I`m starting to do some Bitcoin/Altcoin mining as well.
To your special problem, do you still have access with your bitcoin wallet software e.g. bitcoin-qt to this wallet?
If you do, then you should only remember your passphrase if you encrypted your wallet