No, it's optimization during upload. In short, it's optimizing the compression method.

I have implemented measures to minimize degradation based on the libraries being used. However, we have confirmed that these measures are ineffective on Mac Safari and iOS.

はい、現状スターターパックには対応しておりません。
今後対応を検討中です。

Yes, it's a hosting service issue, and I think it's temporary.

It appears that Vercel is currently experiencing an outage.
https://www.vercel-status.com/

This may be a cache issue. Reloading the page or pressing the Shift key while clicking the refresh button might resolve it.

Oh...
In my understanding, ministries are somewhat independent from the Cabinet, and these accounts should provide politically neutral, useful information for daily life (like healthcare or weather). But is that not the case in the United States...