As of December 31, 2021, existing HPSDK integrations will be deprecated.

[ViktorsS]

Hi! 

previously there was announced by Shopify "As of December 31, 2021, existing HPSDK integrations will be deprecated."

Access to payment app developers was open only recently and development is ongoing. At the same time we see that Shopify is quite busy and answers are not coming fast and I am draught that Shopify will be able to provide needed support for be ready with Payment app until given date.
1) Is there plans to prolong deadline?

2) Will merchants be able to use existing apps after deadline until they are migrated or those apps will stop to work?

3) Did Shopify communicated already to merchants those changes of apps, so they can take action to switch app or platform?