Purchase takes 5+ minutes to complete on iPadOS 18+ and Adapty 3

[bivant]

My app was rejected by Apple review team (Adapty 3.1.0):

We found that your in-app purchase products exhibited one or more bugs which create a poor user experience. Specifically, your app loaded indefinitely when we tapped on any of the subscription plans. Please review the details and resources below and complete the next steps.

Review device details:
Device type: iPad Air (5th generation)
OS version: iPadOS 18.1.1

My testing on iPad mini, iOS (iPadOS) 18.2 (22C152), Adapty 3.2.1, xCode:

#nn6YEB# makePurchase begin
v3.2.1, AdaptyUI/AdaptyEventsHandler.swift#72
Timestamp: 2024-12-12 13:40:25.930373+03:00
Calling now: makePurchase(product:) [1yvWA6]  makePurchase: ["product_id": Optional("--------"), "variation_id": Optional("-------"), "paywall_name": Optional("Yearly and Weekly")]
v3.2.1, Adapty/Adapty+Shared.swift#57
Timestamp: 2024-12-12 13:40:25.978478+03:00


Completed makePurchase(product:) [1yvWA6] is successful.
v3.2.1, Adapty/Adapty+Shared.swift#62
Timestamp: 2024-12-12 13:46:21.393600+03:00

Adapty 3.0.3, xCode:

[Adapty v3.0.3] - VERBOSE: [UI] #5T3Qsm# makePurchase begin
Timestamp: 2024-12-12 14:45:17.988081+03:00
[Adapty v3.0.3] - VERBOSE: Calling now: makePurchase(product:_:) [X9xPSn].
Timestamp: 2024-12-12 14:45:18.009474+03:00
[Adapty v3.0.3] - VERBOSE: Completed makePurchase(product:_:) [X9xPSn]  is successful.
Timestamp: 2024-12-12 14:51:02.257936+03:00

I believe this bug is similar to adaptyteam/AdaptySDK-Flutter#127
Cannot reproduce the issue on devices with iOS 17 or iOS 18.1 (iPhone), iPadOS 17.5