Fix Instagram–Facebook Sharing Link

My Instagram business profile has always cross-posted flawlessly to my Facebook business page, but a few weeks ago it suddenly began routing every share to my personal Facebook profile instead.

What I know so far
• I have not changed any settings on either platform.
• All activity happens on my smartphone (latest iOS/Android).
• I have already tried every common fix: logging out and back in, removing and re-adding accounts, clearing cache, following Meta’s own help flow, scouring YouTube tutorials and forum threads—nothing sticks.

What I need from you
1. Diagnose why Instagram is ignoring the selected Facebook Page and defaulting to the personal profile.
2. Re-establish a stable link so that new posts, reels and stories from Instagram automatically publish to the correct Facebook Page every time.
3. Walk me through any account, Business Suite or Page Role adjustments you had to make so I can keep the connection healthy going forward.

Acceptance criteria
• After your fix, I create a test post on Instagram; it appears only on the designated Facebook Page, not my personal timeline.
• The connection persists after at least one logout/login cycle on my phone.

If you have deep experience with Meta Business Suite, mobile app linking quirks and Facebook Page permissions, I’m ready to work with you right away and compensate you for a swift, lasting solution.