Cannot change GoogleReplacementMode when using paywalls v2

[AlexGrafl]

• I have updated Purchases SDK to the latest version
• I have read the Contribution Guidelines
• I have searched the Community
• I have read docs.revenuecat.com
• I have searched for existing Github issues

Describe the bug

With the new Paywalls v2, there is no way to change the GoogleReplacementMode when making a purchase. I would need to set purchasesAreCompletedBy to MY_APPS to be able to set a custom purchase logic for the paywall to change the mode accordingly. Even your community support does not agree that thats even the correct approach to solve this issue (see this thread from 2 months ago)

1. Environment
   1. Platform: Android
   2. SDK version: 8.20.0
   3. OS version: 15
   4. Android Studio version:
   5. How widespread is the issue. Percentage of devices affected.
2. Debug logs that reproduce the issue
3. Steps to reproduce, with a description of expected vs. actual behavior
4. Other information (e.g. stacktraces, related issues, suggestions how to fix, links for us to have context, eg. stackoverflow, etc.)

Additional context
Add any other context about the problem here.

[RCGitBot]

👀 We've just linked this issue to our internal tracker and notified the team. Thank you for reporting, we're checking this out!

[HaleyRevcat]

Hi @AlexGrafl apologies for the delay here, we've been auditing our ticketing system and found that your ticket was never resolved. I have brought this up with the team and this is something we are looking into.

[shawn-lin-013]

Is there an estimated timeline for merging this PR #2890 ?

[KitTheRevenueCat]

Quick workaround until PR #2890 lands: if you need to control GoogleReplacementMode, you usually have to take over the purchase step instead of using the default paywall purchase path. On Android that means configuring purchases as MY_APP, rendering the paywall for package selection / UI, then launching the actual upgrade or downgrade with your own PurchaseParams.Builder(...).oldProductId(...).googleReplacementMode(...) flow. If you let RevenueCat fully own the paywall purchase, there is currently no hook to inject replacement mode into that purchase call.\n\nThat matches what the open PR is adding: a way to pass replacement data through the paywall purchase flow instead of forcing a full custom purchase handoff. So today the practical split is:\n- need stock paywall purchase flow -> no replacement-mode control yet\n- need replacement-mode control -> custom purchase flow\n\nIf helpful, I have a small starter app here that shows the non-paywall Android purchase plumbing with RevenueCat and can be adapted for the custom flow: https://github.com/KitTheRevenueCat/android-revenuecat-starter