IN PROGRESS My mining, lumber, crafting levels are gone and all my inventory items

Jan 11, 2019
I was playing for around 4-5 hours yesterday grinding to craft weapons until the realisation today that I lost all my items! I was level 20 mining, level 21 lumber and level 6 crafter and I have now lost all my progress towards those skills. The main things I lost from my inventory were my permanent spas12 shotgun(bought it for 20 million) 30 diamond bars and 50ish coal. I would love to get my hard earned items back if anyone can help me! Thank you :)