Endpoint Encryption...Subscription??

[Jane Doe]

I have used Whole Disk Encryption before but it was a one time download
This refers to a subscription
I don't understand how that works   
If you don't pay do they remove it from your computer or disable the encryption?
If they can't than why pay the monthly subscription...I intend on paying it either way just to clarify
But if they can disable or unencrypted int remotely wouldn't it defeat the purpose, and  than wouldn't that be a serious security risk?
Are there better options to encrypt a whole drive? Is there a stronger security protocol than PGP
Can someone please explain how this works I purchased PGP WDE because it was said to be the gold standard of encryption

I'm not Tech Savvy but I do need input about this situation

[DaveLembke]

PGP Universal Server enters learn mode once a subscription license expires. ... encrypted with PGP Whole Disk Encryption will automatically decrypt after 90 days.

https://support.symantec.com/en_US/article.TECH149025.html

Looks like to keep the encryption you need to make sure that you renew the subscription with symantec.