When you can get back online, login back to GOAPS website and check the status of the payment. If the payment was received by GATE, you can continue the process of printing the application form.
If the payment was not received by GATE, you can also check the status of transaction from your bank account. In case, the fee amount has been debited (deducted) from your bank account, but GOAPS does not acknowledge any fee payment, then the money will be credited back to your account. However, this may take a week or more, after the closure of the application process.
In such a situation, you may initiate a fresh payment on GOAPS without waiting for the money to be credited back to your account. This will ensure that your application submission will be on time (within the deadline).