In the beta version, you will need to pay your instalments on/before time in order to not default on your loan. We will be sending out email notifications to you once this moves out of beta.
To pay your instalments, go to My Loans section and select the loan that is due for repayment. Scroll down to the Additional Details section of the screen to view the Pay action button. Click on Pay and Submit the transaction via MetaMask to pay your instalment.
Finally, you can click on Withdraw Collateral button to get back the collateral into your original wallet-from which the collateral was funded.