The Moment team has discussed these issues at length. We recognize that many existing projects may continue to use Moment, but we would like to discourage Moment from being used in new projects going forward. Instead, we would like to recommend alternatives that are excellent choices for use in modern applications today.

You might try this extension: https://github.com/andreicristianpetcu/google_translate_this It does the same thing in the same way as Page Translator and likely will be blocked by Mozilla, but this is a cat and mouse game worth playing if you rely on full-page in-line language translation.

If you need a tool to backup your documents and files please take a look at the excellent BackInTime application which is more configurable and provides options for saving user files.