Recently, Coin ATM Radar began prioritising machine listings which relayed such information.
To ensure your listings are appropriately prioritised, please update your Coin ATM Radar plugin by running the following command within your server's terminal:
curl -sS https://raw.githubusercontent.com/lamassu/lamassu-patches/master/hotfix/coinatmradar/patch.sh | bash
Your listing will shortly after begin to include your fixed fees (if any).
Here's an example of how fixed fees are presented on Coin ATM Radar, with this listing showing $1.00 for BTC and $0.25 for LTC:
(If you upgraded to Defiant Dingirma v7.4.7 on 26 January 2020 or later, this change is already present.)