It is possible to link your Deezer account to your Scrobble Last FM account from a computer/laptop using this link:
https://www.deezer.com/account/share
You should see the Scrobble as the option on the right.
Best answer by bluezzbastardzz
As far as I remember, Deezer’s internal scrobbling option wasn’t working correctly around that time and was simply lagging several hours with submitting the scrobbles to your Last.fm account, so probably it was coincidence that it started working for you again after reinstalling. This lagging occurs from time to time, and the only thing you can do in this case is wait.
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