I'm an experienced Firefox user who has already tried multiple troubleshooting steps. I need concrete support for this specific problem. PROBLEM SUMMARY: I have ~1,625 bookmarks on my Android tablet (Device D). These bookmarks are NOT syncing to my other devices (Windows 11 + 2x Android). All other devices remain empty – no bookmarks available. DEVICE SETUP: - Device A: Huawei Notebook, Windows 11, Firefox (new profile "CleanSync") - Device B: Android phone, Firefox - Device C: Android phone, Firefox - Device D: Samsung Tablet SM-X200, Android 14, Firefox (SOURCE of bookmarks!) SYNC ACCOUNT: - Email: deviation@nickname.berlin.de (Newly created, old accounts deleted) - All 4 devices signed in + Sync enabled - Sync settings: "Bookmarks" CHECKED ✓ on all WHAT I'VE TRIED: 1. Cleared Firefox cache on all devices (A/B/C/D) 2. Cleared Firefox data on Android B/C 3. Deleted old Sync accounts server-side (via accounts.firefox.com) 4. Created new account + added devices sequentially 5. WAITED: 2+ hours → No change SYMPTOM: - Device D: 1,625 bookmarks LOCAL ✓ - Device A/B/C: 0 bookmarks (completely empty) ✗ - Sync status A/B/C: Shows "Sync enabled" + last sync X min ago - → But bookmarks NOT arriving SUSPECTED CAUSE: Bookmarks from Device D not uploading to Mozilla server → other devices can't sync LOGS AVAILABLE: - Device A: `about:sync-log` (can provide screenshots) - All devices: Sync settings screenshots TWO QUESTIONS: 1. Diagnosis: What can I test to debug why bookmarks from Android D are not syncing? (Please NO FAQ links – I need individual instructions for this specific problem.) 2. Fallback option: Is there a way to backup/export the 1,625 bookmarks from Android D WITHOUT Sync (file, SQL export, cloud backup)? I could then manually import to other devices. Thanx so much in advance! 🙏