How to add more executions to my monthly plan?

I’m on the Pro2 plan and used up all of my credits. my workflows stopped working and i don’t see a way to renew them online. I really need this fixed ASAP but support is so slow. how can add more executions to my plan by myself?

I would suggest to self host for testing and keep the cloud version only for clients. that way you wont use up everything. this might help - https://youtu.be/ZM9w2SvSzV4