Mandatory e-Pay for individuals in California

Just to be clear, I'm just wondering whether I need to do anything only for 2019 tax (for which the payment has already been made)?

I understand that, for future tax years, such as 2020 and 2021,  I need to pay the tax due electronically.

did you read the WHOLE notice?  e-payments are only required when that amount is 

Electronic payments are required if you either:

Make an estimated tax or extension payment over $20,000
File an original return with a tax liability over $80,000

then you can also see if you can get a waiver

Waiver request
To submit a request:

Download the waiver request form
Complete, print, and send your request with the required documentation
Fax
(916) 843-0468
Mail
State of California
Franchise Tax Board
PO Box 942840
Sacramento CA 94240-0040

and what's a taxpayer suppose to do if no bank account or credit card. 

Hi Baozi, 

Did you end up figuring out what you are supposed to do?  The responses to your post do not appear helpful, just snarky comments.  I'm in the same boat as you, and similarly wonder if we can continue to use TurboTax and the only difference is at the submission step (electronic versus in hardcopy), or if the mandatory e-payment needs to be submitted earlier (e.g., quarterly, like for federal tax purposes).   Any experience and insight you can share would be greatly appreciated.  

By the way, don't know if you also went down this path, but the ftb.ca.gov website is a disaster.  On the page to choose the payment type, there's simply no choice for mandatory e-payment.  

Thanks in advance,