In case you’ve issues with the brush-tips from the Paolo Puggioni - Krita Cloud Brushes, then I have a solution for you, because I just have uploaded them into my cloud fully converted into a bundle for Krita from version 5 up.
You’ll find the topic where I present the bundle under this link:
In case your issues lie in the “JeremyFenske_brushset2.abr”, I’ve uploaded a version of this ABR-File that I’ve converted into an older ABR-Format Krita can read, because it seemed to me that this ABR was created for newer PS-Versions, but Krita can’t read these new ABR’s. Because this set is offered free of charge, I was so cheeky to upload the converted set to my cloud too:
In case you have issues with other brushes or bundles, feel free to ask for support with them. We would need the name of the brush, bundle or the ABR-File with which you have issues, and if possible the download-location from where you got this resource, so we don’t need to guess. 
Depending on the course of a procedure, I will spend at least three days in the hospital from tomorrow afternoon on.
But there are enough knowledgeable users here on the forum who know about resources, so you should find support.
Michelist