You cannot visit sbw.app right now because the website uses HSTS. Network errors and attacks are usually temporary, so this page will probably work later.
seems this is the issue. it's not down per se but chrome is letting us know the SSL cert is screwed up in some way.
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The certificate just expired today (Sep 23rd) and the site uses Lets Encrypt (self-signed). Normally, this would just be a matter of a waiting for a website admin to discover that the cert has expired. However, if the developer, Anton, is the only website admin, this may not happen, due to:
SBW Wallet Developer: Safe to say I'll never return to bitcoin/ln dev #66327 https://twitter.com/akumaigorodski/status/1566374265393389568 [Nitter]
The app doesn't use the website, and can be installed using either F-Droid or Google Play. The APK is available on the github:
There's an archive of the site as well.
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Also mention the telegram group about hosted channels, where we discuss many aspects involving SBW https://t.me/hostedchannels
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UPDATE
Not discontinued but can be considered updated to new major version (while retaining backwards compat ofc). Not that any of this matters since now it's discontinued for real.
[Emphasis mine]

There are a number of forks including one by @fiatjaf but of course, don't assume a fork is safe to use simply because the project it was a fork of was trusted.
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It's interesting that the BlueWallet developer is so salty on that thread. Is him feeling threatened by a discontinued wallet that doesn't even have a website?
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Here the message is appearing: "NET::ERR_CERT_DATE_INVALID"
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