@David-TP 

Thank you very much. I appreciate your interest. My issue was resolved with a sort of customized fix in 1.1.7 version. To do this, I was contacted through discord to arrange remote sessions on my computer. i wrote again on discord and the engineer reported me not to upgrade to 1.2.0. But I had no clues on future release. I will search among my emails to see if i find engineers' e-mail addresses to remind them to include the fix in new firmware. With my ticket and the sessions (at early morning as there is big difference between our countries) I contributed to discover a bug, so it would be disappointing being prevented from upgrading and benefit of enhancements.

The fix was about a bug in QoS: i need to use Qos because Deco does not manage very well my upload speed (500 mbit up/2500 down) for probably "buffer bloat" reason. This issue, at present, remains not solved and probably will never be solved, according to engineers answers.

Thanks 

  @Dan70bo 

I'd like to benefit of next 1.2.10, so i kindle ask if  Qos bug fix  (I discovered) is going to be included in next release. I'm stuck in 1.1.7 custom and i can't benefit of secure updates. It's not fair.  No one givers me response. I'll write to every official head quarter contact to complain. Is this your assistance? 

  @ARGamingPK1 

Unforunately I can't. I found a bug that in QoS mode blocked some apps on mobile or tablet. Engineers fixed this in a custom version1.1.7, but the did not include this in 1.2.0. If I upgrade, I'll lose the fix.

  @ARGamingPK1 

yes, this the reason why i'm complaining. I'm waiting the fix in an official firmware since july.  I hope in the next release 1.2.10, otherwise I'll write to every level of customer service or I'll sell tp link mesh system. In 2025 it's not the way to give  assistance.