When using Google’s Webmaster Tools for URL submission, you will now see a message that says Page actions are temporarily disabled and Indexing requests are currently suspended. This is temporary. Try back later or the next day. This started on October 15th 2020. One may assume this was being abused, which is why it was abruptly removed.
We have disabled the "Request Indexing" feature of the URL Inspection Tool, in order to make some infrastructure changes. We expect it will return in the coming weeks. We continue to find & index content through our regular methods, as covered here: https://t.co/rMFVaLht6V— Google Webmasters (@googlewmc) October 14, 2020