Local AI for document search — Informity AI, runs entirely on-device

I’m struggling to get Informity to scan and index all my files (all PDFs). I have 18 in the folder I want Informity to access and the most it will index is 12. I’ve tried increasing the max indexable file size to 500mb but everytime I click save it returns to 100mb. I don’t know if this is what’s causing my issues or not (as tbf all the files are less than 100mb) but is there anything else I can try?