https://wccftech.com/apple-temporarily-removes-watchos-5-beta-1-from-website-due-to-an-issue-that-occurs-while-updating/

yesterday, Apple made the watchOS 5 beta 1 available for developers on its website. Today, the company has seemingly stopped offering it and removed it. This means that you cannot download and install the watchOS 5 beta 1. Moreover, the company has acknowledged it and has stated the reason for its removal. We’re not sure about the time frame when Apple will make it available for developers again. So let’s dive in to see some more details on it.

As we have mentioned earlier, Apple has stopped offering the watchOS beta 1 on its website. On Apple’s developer portal, it is stated that the watchOS 5 beta 1 is “temporarily unavailable”. The company suggests that the update process renders the Apple Watch unusable for some users.