Hi Roxane, I see you are currently connected to 7 relays and they may not be able to efficiently broadcast and fetch a considerable amount of notes. As a minimum I’d suggest you to add the following three: wss://relay.damus.io/ , wss://nostr.mutinywallet.com/ , wss://relay.snort.social/
I would also get rid of some if you feel like this many connections overload your device.
A good practice would be also connecting to the nostr.wine relay and filter.nostr.wine. It is paid, but we’ll worth it’s money.
You can find out more info on relays in my guide here: https://lnshort.it/nostr-relays
It’s quite a technical topic, but not as complicated as may seem.
As for Habla, it currently broadcasts notes to the relays you are connected to. Adding or removing relays on your preferred browser will change the settings for Habla as well. An option to change your relay setup on Habla is on the roadmap. Also Habla only displays long-form posts, so you won’t see the short notes or corresponding interactions there.
You can find more Nostr related guides in my blog here: https://habla.news/tony
Feel free to reach out if you have any questions