I have ROL subscription and the question is how do I get the voucher for the exam? I am going through the DO409 course right now. Having a little tough time with the lab/s as Workstation VM even after resetting it few times gets stuck at "A start job is runn for LSB ... " and other many other "A start job is running for ....". Therefore not able to proceed with the labs. I have deleted and provisioned lab I thinik twice.
For the exam, you should be able to add the exam into your cart and check it out - however if you have an issue with adding the voucher or getting the exam I would suggest just emailing the learning support team and they can book it for you - provided you have a subscription that has exam vouchers like the Standard Sub.
As for your technical issue with the lab - you probably just wanna log this with support