no button or anything in deezer web to import to musicbrainz
I am running firefox latest version and on deezer web, for example, this album https://www.deezer.com/en/album/8150102 there is no import to MusicBrainz button at the bottom or top of the album. not sure if there is an issue or I'm not looking in the right place but thought that like with importing from Discogs button, it would be fairly obvious.
Works for me using Tampermonkey and Firefox:

Have you tried refreshing the page in your browser? Deezer is an SPA (e.g. each page is dynamically loaded via Javascript rather than by the browser). A side effect of this is that document ready handler (which adds the MB import buttons) is only called in the first Deezer page you visit.
I have developed a workaround for this problem but unfortunately it fails intermittently and I've not been able to establish why.
Yes, I do try refresh even with ctrl and f5 and sometimes the buttons load and then later for another album, it wouldn't load. This is on Greece monkey and tampermonkey.
However, directly installing the script produces and cross orgin request and the buttons loaded.
However, directly installing the script produces and cross orgin request and the buttons loaded.
Can you clarify what you mean by "directly installing the script"? Does this mean the issue is resolved?
i have found a temporary workaround in tampermonky.
I just have to go to the dashboard and select the script and selected the whole install URL (where it says raw.githubusercontent) and right-click, select open and it prompts for reinstall.
refresh the Deezer page and then tampermonkey will open a new tab and prompt for raw access or something. just select tempory as even permanent doesnt fix it.