I have 21 days left of cam plus membership but i need to upgrade to unlimited version so i upgrade it today will it take in affect today or will i have to wait 21 days for subscription of cam plus to end?
Not sure if it’s still the case, but Unlimited would probably be active at purchase and you would lose the 21 days on the other subscription. It’s possible there is some sort of proration, but that hasn’t been the case in the past.
you used to lose it but now they will take your remaining time into account when upgrading a plan. When you get to the very last checkout screen under the price you will see a proration of time remaining. For easy math lets say 1 month left. If you upgrade to a yearly it will say something like you pay today but renew in 13 months. Or if you choose monthly you will pay today and next charge is 60 days. Its not exactly 1:1 based on my personal experience with upgrading but pretty close. Yearly seems to give you a few bonus days.
EDIT: link to support article i found
https://support.wyze.com/hc/en-us/articles/24677783171867-What-happens-to-my-existing-plan-when-I-upgrade-to-a-different-security-plan