this mod is wonderful! However, the flint pickaxes won't mine iron and since this mod completely removes stone tools, it halts progression pretty quickly! please help me out lol

What version are you using, I believe I fixed this in 1.15.2-3.0.4

I downloaded the latest release a few days ago but I’ll re-download your new 1.15 version and try it out! Thank you :)

I've tested with 3.0.4+ and it seems to be working fine. If it's still the case let me know and I'll investigate further, otherwise I'm considering this fixed.