New accounts are on trial for 48h for "Lingvist unlimited". That is what I had seen for my own account starting January.
I would not expect that a new user, learning a bew language from scratch, is really able to go much higher than 20-50 words / day.
See my Lingvist 2017 challenge and my own 11 days statistic.
To be able to learn 100-150 I had to invist 2-3h per day for some days and push the cards to >=1000 limit.
If a user is already intermediate in a language, well yes, this is something else and Carlos, who took part in my end of 2017 challenge proved that he could go >300 words on a day.
But let's wait what the offical Lingvist staff tells you...