I assume the version 2.0.1 still works because you have set parameter "use_s3_l1c_bucket": true which then downloads everything from s3 bucket instead of “http://sentinel-s2-l1c.s3.amazonaws.com/”. In newer versions those metadata files which are available from “https://roda.sentinel-hub.com” are downloaded from there, hence slightly less requests to s3.
It is possible that newer versions are causing you problems because we changed library for reading Jpeg 2000 images from OpenCV to Pillow. Even though Pillow doesn’t raise errors during installation sometimes its capabilities to read Jpeg 2000 images don’t get installed properly (especially on Windows). Hence installation from wheel is recommended.
Anyway if you will still have some problems with the newest version of sentinelhub-py please create a new thread on this forum about it or raise an issue on Github. We will be happy to help you resolve the problem.