The FixedFloat.io Example 1. The FixedFloat.io Example For example, if you want to exchange TONCOIN for BTC LN at the FixedFloat.io merchant site, you must mention the site's name when sending the funds. 2. Limitations Coinbase's limitations can cause problems for users who want to use exchange services. 3. Possible Solutions It would make more sense for Coinbase to remove these limitations or provide an alternative solution for users.