Haven't been able to gift people after several days of friendship.

WHY CAN'T I SEND A GIFT TO MY FRIEND?

The following factors determine whether you can send or receive gifts:

The player receiving a gift needs to have been on your buddy list for at least one day.
The player sending or receiving a gift cannot be banned or suspended (this includes Instant Feedback System).
There are also specific rules for different types of gifting:

CONTENT GIFTING (Skins, Champions, Rune Pages)

To send a gift, you must be at least level 10.
You can only send up to 10 gifts every 24 hours.
You can only receive up to 10 gifts every 24 hours.


Link: https://support-leagueoflegends.riotgames.com/hc/en-us/articles/201752964-Gifting-Guide-and-FAQ#:~:text=CONTENT%20GIFTING%20(Skins%2C%20Champions%2C,10%20gifts%20every%2024%20hours.

Still random who I can send to.

Today it let me click gift but wouldn't let me select an rp amount. Went right from choose the type of gift to finalize and skipped the specific gift amount t step

Do you know if the recievers account have been banned / suspended / chat restricted lately?
Or if your account have been banned / suspended / chat restricted?

If not, then it might just be Riot's client that isn't working... wouldn't surprise me