Write to [email protected]. That mailbox is the public address for corrections, missing hashes, and legal notices. I would rather fix a wrong SHA-1 than defend it. Include the page URL and the source you think I missed. If two sources disagree, quote both. I keep disagreements on the page instead of averaging them.
Do not attach a ROM, an ISO, or a patch that contains a game. There is nothing useful I can do with a dump in an inbox, and I do not want one. A link to an author page is enough. For a copyright notice, use the DMCA page so the message has the elements that statute lists, and send it to the same address.
The mailbox is meant to receive mail and to answer it. If a message bounces, say so on a second try only after a day. I do not offer live chat, a Discord, or a phone number. Those channels do not exist for this site, so I will not invent them here.
Related pages: editorial policy, privacy, and about. Technical errors in the patcher belong on the error index as well, with the exact sentence the tool printed.