why am i still getting 'no bids' from index exchange after endless header bidding errors troubleshooting?

man, i am so beyond frustrated right now i could scream. this is a direct follow-up to all the prebid config issues i've been wrestling with, and it feels like i'm hitting a brick wall specifically with Index Exchange. seriously, i've been at this for hours, days even, and i'm just completely stuck.

the core problem is this: i am consistently, stubbornly getting 'no bids' from Index Exchange. every single time. it's infuriating because other bidders in my setup – openx, appnexus, rubicon, you name it – they're all returning bids just fine, sometimes even winning. but IX? nothing. nada. zero. this isn't just a minor annoyance; it's a huge chunk of potential revenue just sitting there, completely untapped because of these persistent header bidding issues.

i've tried everything under the sun, i swear:

• i've double-checked pbjs.getConfig() and pbjs.getAdserverTargeting() outputs a thousand times, looking for any weird discrepancies or missing parameters that might be specific to IX.
• i've verified index exchange bidder parameters like siteID, bidFloor, and sizeConfig against their documentation like a hawk. pretty sure those are spot on.
• confirmed that the indexExchangeAdapter.js is correctly loaded and configured within pbjs.addBidder(). no obvious typos or path issues there.
• scoured browser console and prebid debug logs for any index exchange-specific errors or warnings. sometimes i see a generic 'no bid' but nothing that points to *why*.
• compared my setup against working examples and official IX integration guides, trying to spot any subtle differences.
• even attempted clearing cache, using incognito mode, and testing across different browsers just in case it was some weird local caching thing. it's not.

here are some specific observations, maybe they're clues:

• i don't see any specific, *actionable* error messages in the bid request/response flow for IX, which is part of the problem. it's just... empty.
• the issue occurs on all ad units where IX is configured, not just a subset. so it doesn't seem to be an ad unit-specific misconfiguration.
• there's no difference in behavior between development and production environments, which rules out some environment-specific firewall or network issue, i think.

please, someone, anyone, throw me a bone here. i'm desperate. what are common, tricky pitfalls unique to Index Exchange integration that might cause 'no bids' even when everything *seems* correct? has anyone encountered and resolved similar 'no bids' issues specifically with Index Exchange? are there particular bidderSettings or ortb2 parameters for IX that are frequently misconfigured in ways that aren't immediately obvious? any recommended browser extensions or debugging tools for deep-diving into IX bid requests and responses beyond the standard prebid debug?