Sometimes I am experiencing more than 20 hours waiting for my transactions on Rinkeby Tesnet to be confirmed. I know I can't start mining myself because I'm not authorized to do so.
What is causing this?
What can I do in such cases?
What I need is to be able to develop, deploy, test (using web3js & Metamask) and then make changes to start all over. I can't wait 20 hours each time I deploy a new version of my Contract.