Just take only the pre-approved stake first. For example you want to bet 100 @ 1.82 and on Unibet will show that you can bet only 60 euro and 40 euro will go to the traders, take that 60 euro bet. If you go with 100 euro bet to the traders, you have the chance to receive only 10 instead of at least 60 euro, which was your limit. For sure you are from a restricted country, that's why your limit it's so low.