Beginning in Version 2020, you can now select whether you want the Newsletter Reminder window to pop up each month or not! Once you have updated to Version 20.1.5 or later, the Newsletter Delivery Options window will be displayed when logging in. You can select to either subscribe to the Email Newsletter, or to have the Newsletter Reminder window continue to open after the 14th of each month.
You can always change your mind later. Newsletter Delivery Options can be accessed via the Delivery Options button on the Newsletter Reminder window as well as via the Help | Internet Resources | Newsletter Delivery Options menu.