The "Total in assets in USDT on exchange" looks at the value of all cryptocurrencies held on your crypto exchange that have a trading pair with your chosen quote currency.

Therefore, if you own cryptocurrencies that do not have a trading pair with the quote currency you have chosen, the value displayed on Cryptohopper will be lower than in your crypto exchange account.

A quote currency is used by your trading bot to buy other currencies and to sell those back for quote your currency. Make sure that you deposit funds corresponding to the quote currency, otherwise, your bot won’t have funds to buy cryptocurrencies with.