Which site did you use to convert Hive to Swap.Hive, https://beeswap.dcity.io/convert or https://uswap.app/ or https://tribaldex.com/wallet/? Just sending Hive to the @leodex account won´t work I guess. The site needs to have the required liquidity (in this case the 80 Swap.Hive), you need to check this in advance.