hello,
I have the ER605 router connected to the OC200 with an access point.
I have created through the portal, several vouchers for testing. If I limit the traffic to 1Gb per month, at the end of the month it appears as expired and does not recharge.
I have tried to set the limit to 1 day and also 1 week, but it doesn't work. When the Gb limit is reached, it is not recharged and appears expired.

I have selected this way:
-voucher duraction
-By usage
-Duration: custom, 300 days ( I need a voucher with a duration of approximately 1 year, with a data limit of 1 Gb per month.

Traffic limit: (x)enable Limit: every day/every month 1 Gb

Regards