What is the minimum network fee for copay?

[Rmoudatir]

Today I went to a liquor store bitcoin atm and payed $45 and got $38.64 in bitcoin and I received it instantly but then it said "spending this balance will need significant Bitcoin network fees." And when I try sending it to buy altcoins it then says "insufficient funds." Then I saw that I can set to super economy but even then it cut my money in half. Bur then when I put custom it allowed me to put the sat/byte rate lower and it said "your fee is lower than recommended" but allowed me and was cheaper bur haven't confirmed it. What should I do?