What happened to being able to pay to test your level, so you can test and see the improvement next time?
Could you relocate this discussion in the “Troubleshooting" forum? Which is the place meant for such discussion ("How Duo works?", "What is/How works this or that feature/thing?", etc.). Thx!
To relocate it (*), edit your original post then select said forum in the drop-down menu on top-left of the edition area (see here for details).
(*) /!\ please, don’t create a new one /!\
Have a look to this short guide to help you knowing where to post your (future) discussions on Duolingo’s forums.
What happened to being able to pay to test your level