Multiple iPads icloud locked
My wife and I own a small Cell Phone Repair Shop in Aus. We were recently approached by a large company here to fix 150+ ipad digitizers. They did not want to proceed with the repairs as they were expecting them cheaper than what we could do. They proceeded to tell me they would be donating them to charity etc. I offered to buy some of them. We purchased 21 in total from ipad 6 through to ipad 9 series. We have repaired all of them and had minimal issues(a couple without touch ID etc). We have been selling them off however there are 3 devices that are Icloud Locked. Speaking with the IT manager at this company he has informed me that they are locked by 3 individual staff who no longer work there. There were 2 others that were locked but they were able to unlock them for us. Is there anyway to remove the icloud/activation lock via a jailbreak process etc?. I don't want to sell these 3 if i jailbreak them, i will just give them to our kids to use. But i would like to get some use out of them as we have fully repaired them and they work just fine. Any help is appreciated.