Make sure you email service@soundcore.com with this request. They are busy people and are listening but they don’t read this community and emails as rapidly as they do the emails.
Make sure they know this is a priority and their track record is one of a listening company.
The fact the product used to have ANC wired means it’s just a firmware upgrade tweak. In their minds they may be thinking they answered this with the Q35 but as stated in some countries that is not an affordable offering.
Personally, I know Q30/Q35 ANC is not that good, I’d not buy Q30/Q35 for flying, there are other non-Soundcore products with much better ANC (e.g. Sony). ANC on Q30/Q35 is a useful, low cost option but not really what you should be buying it for. In my opinion.
I own some very expensive Sony with excellent ANC, but I use Q30 to basically make the Sony last longer, less wear and tear but I’d take the Sony on a flight for sure.