I have lost last 10 biddings though the preferences shows that authorization is valid
" Your authorization for us to bid on your behalf is Valid.
It expires in 540 days on August 9, 2025."
And I never revoked bidslammer authorisation ! Please confirm that I have no restriction and it will work next time.

Hello Paul,
Thank you for your question about the 'token revoked' error. eBay will revoke a token for the following reasons:
1. If they found a security concern or unusual activity with your eBay account.
2. If you changed your password at eBay.
3. If you manually revoked it from My eBay. However, this is probably not the case, as you would probably have remembered doing so.
We do have a "check" in place, that is, we check the token periodically, up to 8 hours before the bid. There is also a "log" icon next to the snipe, which shows the full second-by-second account, so that you can verify the actual bid placement.
To rectify, just go to your Dashboard at our site, click Preferences on the left sidebar, and then click the blue "Log in with eBay" button. That will get you going.
I hope this has been explained to your satisfaction. If you have any other questions, please reply and we're happy to help further.