Download the latest version of the SDK. Current SDK version: 4.0.10
Drag the "TappxFramework.framework" and "OMSDK_Tappx.xcframework" files inside the Xcode Project.
Once it's done, you will see the option screen where you must check the same options as in the following screen:
When you have the SDK in your project, you must change in "Frameworks, Libraries, and Embedded Content" the "embed" from the SDKs:
Add the -ObjC linker flag to Other Linker Flags in your project's build settings: