We are so happy you are enjoying using Viddyoze. If you are looking to upgrade, all the details can be found in your account plan page here
If for any reason this doesn't work, or you want some more help upgrading, please reach out to our support team via live chat, who can give you all the details
Please note: we do not have ongoing discounts for PRO. We periodically have offers on but these will always be communicated in-app and via email so you'd never miss out.