How to use my flic buttons with Homekit AGAIN ?

[business2]

It's all about the 'again'. Let me explain: I set up Flic for Homekit on a few buttons. No problem. Everything worked fine. Then, after a few days, for God knows what reason, Homekit reverted to a previous configuration (from a few months ago). But now the Flic hub no longer appears among the list of hubs in my Home app.

So I tried to reset my Flic Hub. Pressing for 15 or 20 seconds on the pinhole reset doesn't always work! But I finally managed to reset the hub (I think.) I had to enter the hub’s password (printed on the back of the box), had to enter my wifi password again, and add my buttons (8 in total).
But when I want to use Homekit with a button, the pairing procedure does not work. Homekit can't find the Flic hub.
What can I do?
Couldn't you allow a reset of the hub via the app?
Thank you for any help you can give to me !