tagLowFees error clarification

[dabura667]

bitcore-wallet-service/lib/server.js

Line 2962 in d416284

tx.lowFees = tx.feePerKb < minFeePerKb;

So this is going through the transactions with outputs available in the current wallet that have 0 confirmations and checking if the feePerKb of the transaction containing that output is less than the feePerKb suggested by superEconomy rate.

If so, Copay will display "Amount too low to spend" under the assumption that "rather than trying to CPFP the feeRate, we would rather just tell the user it is too dangerous to use this utxo in their sending unless it is confirmed."

Two problems:

1. This error is inaccurate (It should be "This unconfirmed bitcoin is too dangerous to use yet. So you can not spend it yet. Please wait for confirmation from the Bitcoin network.")
2. It does not disappear after confirmations are gained. (Cached on the local wallet)

Perhaps this issue is better fixed client side... not sure.