Can you not mine anymore?

I’m able to dig downstairs no problem but nothing I’ve done seems able to get through the solid stone. I tried a pickaxe, jackhammer, and just smacking it with heavy hitting stuff but it seems invincible. Am I doing something wrong or what?

Had the same issue, if you are using launcher you need to uninstall the mining mod completely and install it again. Not sure if this will work with existing maps.

Ah, just an outdated version of the mod. Well it works fine on new worlds now yeah but not the current one as expected.