Options of subscriptions, blacklist and whitelist for system wide ad blocking. (AG Pro for iOS)

Users subscribe external filters.
I think it's necessary to give the option of subscriptions and let users manually fill in the URL links of subscriptions.

Ex:
Do you use subscriptions in Privacy Settings?
Yes or No.
If yes, please fill in the URL of subscriptions.
https://1hosts.cf/mini
https://raw.githubusercontent.com/vokins/yhosts/master/hosts.txt

Are there any rules in the blacklist or whitelist of Privacy Settings?
Yes or No.
If yes, please fill in.
Blacklist:
example.com

Whitlist:
example.org