Trying to fork a project

Hello, so I have been trying to fork a project several times now. Everything works well except the part where I need to verify my contract on bscscan. Once I verify and optimize then it shows no problems, but when I try to read or write the contract it shows an error like this

. The code that I want to fork is this one . I have changed name, symbol, token name and etc. Nothing works. And have compiled it in remix with solidity version 0.6.12 and the same on bscscan (solidity single file) (0.6.12)

Welcome sjennif_f!

At first glance, this looks like a dev environment issue with improper deployment.

Can you try to verify it in Remix using a plugin?