Best share: 485
[2020-01-18 13:51:58.115] Pool 0 difficulty changed to 500000
Your best share is 485 and the minimum your pool will accept is 500,000. So until your miner finds a share equal to or higher than that the pool will not accept a share from you. Just be patient you should be able to submit one after a half million Diff1 shares, but it may take a long time.
If your pool accepts it you add "--suggest-diff 128" to your command line for CGMiner.
Edit: It's not your mining hardware that's not accepting shares it's your pool that's not accepting shares from your miner.