API isn’t working

Hi,

I’m trying to create a ticket using API, but it didn’t work!
I’m using an online tool to curl called reqbin.com.
The command I used:

curl --location --request POST 'https://mydomain.com/wp-json/fluent-support/v2/customer-portal/tickets?title=demoTitle&content=demoContent' \
--header 'Authorization: BASIC s****a:7*** 6**G **** 4**t **** ***E' \

The error is:

{
"code": "rest_forbidden",
"message": "Sorry, you are not allowed to do that.",
"data": {
"status": 401
}
}

Can you please tell me what I can do? My application password and username weren’t wrong!
Do I need to change any settings from my dashboard?

Thank you.