I'm a TA in a cybersecurity class and all of our students have the free Azure starter accounts. We were walking them through setting up load balancers and many students ran into a limit of 3 public IPs from the total number of previous VMs they had created. Most students were able to get going again by disassociating the public IPs and deleting them, then restarting their load balancer activity.
One particular student got rid of their public IPs to redo an assignment, but were unable to re-create any. We disassociated them from the VM, then deleted them. They still received the error that too many public IPs had been allocated, even after an hour wait. We tried changing regions to no avail.
Can anyone help spitball what could be going on? What should I look for or test to further diagnose? Do Public IPs take a long while to actually get freed in Azure? Are there any region limitations? What are all of the constraints on a free account regarding public IP addresses or addresses per region?
Thank you in advance.