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Majority of users already read such minimum deposit thing and always set values fixed to minimum deposit needed for the swap or higher values so they won't face any issue but there are some users who make such mistakes but again a useful feature that gives such message is useful for every user.
I havent seen other users here get short with their minimum deposits most of the time is minimum to above minimum amount, I guess for the new comers possible who havent made a swap for their first time such as deducting the fees to the total amount but seems rarely seen this nowadays.
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I believe the refund address must be added before proceeding with the swap. Its better to avoid unnecessary hassle for both exchanges and users. When something goes wrong, then users have to talk with support, etc. Refund address should be mandatory, not optional anyway.
Personally id prefer having a refund address in their feature so if ever there is a problem users capable to make a refund without hassle for the both inquiries with the platform and waiting time for the end user, but I do recommend too this aint mandatory before swapping because only those people who prefers.
