[Dan0sz]

A customer using WPML (a directory per language) got "Oops! The Plugin Token you used is invalid" during setup, even with a freshly created token.

Cause

When no Domain Name is saved yet, Helpers::get_domain() falls back to home_url(), stripping only the scheme and www.. WPML filters home_url() to include the current language's directory, e.g. https://www.example.com/fr. The Domain Name field gets pre-filled with example.com/fr and saved like that, so Client::validate_api_token() never matches the token's domain (example.com) and reports the token as invalid.

Fix

The fallback now uses the unfiltered get_option( 'home' ). Multilingual plugins hook into the home_url filter, so their language directory no longer ends up in the domain. Subdirectory installs (e.g. example.com/blog) behave exactly as before.

Sites that already saved example.com/fr aren't fixed automatically; correcting the Domain Name in the settings resolves it there.

Tests

• New testGetDomainIgnoresLanguageDirectoryInHomeUrl: filters home_url to append /fr and checks the domain doesn't contain it.
• The rest of the suite is unchanged; the two AssetsTest errors I get locally also occur on a clean develop.

Summary by CodeRabbit

• Bug Fixes

  • Fixed Domain Name detection for multilingual sites using per-language directories.
  • Prevented language directory paths from being incorrectly included in the Domain Name, which could cause the Plugin Token to appear invalid.

• Documentation

  • Added a changelog entry describing the multilingual Domain Name and Plugin Token fix.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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• Configuration used: Organization UI
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📥 Commits

Reviewing files that changed from the base of the PR and between eb97dbd and 8f138bd.

📒 Files selected for processing: 3

• readme.txt
• src/Helpers.php
• tests/integration/HelpersTest.php

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📝 Walkthrough

Helpers::get_domain() now derives its fallback domain from the WordPress home option. An integration test verifies that a language directory added to home_url() does not appear in the normalized domain. The changelog records this correction.

Changes: Multilingual domain fallback

Layer / File(s)	Summary
Fallback behavior and validation src/Helpers.php, tests/integration/HelpersTest.php, readme.txt	Helpers::get_domain() uses the home option instead of home_url() for its fallback URL. The integration test checks that a /fr directory added by a filter is excluded from the normalized domain. The 2.6.4 changelog describes the correction.

Priority: ⬇️ Low

Change: Bug fix

Merge Risk: ⚪ Minimal · up to 8f138

The change is ready to merge; no correctness, security, or availability issue was identified.

Pre-merge checks: 5

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and specifically describes the main fix for invalid Plugin Tokens on WPML sites that use language directories.
Docstring Coverage		Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 2 files. (1 skipped: 1 …
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 2 files. (1 skipped: 1 unsupported.)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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