We think you're all set now Sam, but please let us know if you have any additional issues.
As a note - we did release a low priced plan for $5 / month called Cloud Plus yesterday - it has the same features as the Free plan, but comes with 50 hours per month and lets you access additional hours as needed. You can learn more about it on our Plans & Pricing pages at https://rstudio.cloud/plans/plus.