Somehow lately Netflix Charlotte had removed assasination classroom and the Testaments of sisters new devil but was back after half a year or so at assasination classroom it wasn't even 1 month why do they even get it out when it's back in anyway came
The license has expired and you just restored it.
This is due to the licenses, sometimes negotiations for an extension run longer than the expiry date of the old ones
It may be that it was not so well received by the viewers and the ratings might not have been so high, so they maybe I suppose for this reason, so and I don't know any other explanation if the ratings not so high then a lot of things will be posted after a time even if you liked it in your case but then unfortunately you are not in it!
Because you have the licenses for it again.
But not for everything e.g. Testament of sister new devil burst is not back yet.
Everything is due to licenses if you no longer have them you have to remove them again and if you have them you can reinsert them as easy as that
