I cant sell my token

I deployed a BEP20 token in the testnet. I was using https://pancake.kiemtienonline360.com/ to add liquidity and buy and everything was smooth. The contract worked fine. The problem is that im unable to sell. i bought seven max wallets but still no working the sale. Im not sure whats wrong.

I verified the contract in the bsc testnet, here is the link

Here is the code

This is the contract adress, feel free to try to buy and sell it. Its in the testnet, max wallet 3%

Any idea why im unable to sell?

Thank you in advance