0x1af1daaa…98c9sent to0x90b1c917…7ab8·#16,658,407·view on Etherscan
I do not think forC overflow is your issue because forC variable is defined as uint256 (not uint8) therefore it has plenty of space to go.
However even if it was your problem, you could just disable that part of transfer function by toggling "transferRotateEnabled" to FALSE using your function "updateTransferRotate".
I suggest you try my solution I sent in here earlier - or contact me on tg @joe_da_vinci to work on it together (or to share private key and I'll try myself)