Can't set email settings


I’m trying to set email settings to use my hosting provider’s SMTP server but with no success.
After filling the configuration and pressing the “Save” button a loader is shown but it never completes.
I’m able to change other settings without a problem.

Here are my settings:
SMTP Server:
Port: 465
From: PureFunLab
User ID:
Password: <my password>

Can you please assist?

Have you tried clicking the “Test” button before using “Save”? Does the test go through?

Yes. Yesterday it didn’t work. One time it returned error and on the other it didn’t respond like now.

Now I tried again and it worked (“Test passed”) but clicking “Save” still doesn’t work.

What do you select for Security? SSL or TLS?