Do not complete the affinity points for stage two of this program without first collecting the voucher. I did this and cannot redeem the voucher. Attached below is a video demonstration of the bug. I've submitted a bug report but figured people may want to actually know this.
PSA: glitch in the APRIL monthly program
I haven’t done the monthly awards yet but is there an exchange in stage 3 to trade the vouchers in?
I’m not sure that’s a bug though.
You finished that stage without using the voucher, so you’ve already gotten the necessary points. Redeeming the voucher wouldn’t give you anything, unless you just want it out of your inventory for some reason.