A 'not secure' message' is putting off my viewers. How do I stop it?

[prettypics]

Happens with google chrome browser but microsoft edge is ok.

[alemoppo]

Hello, did you activate https from here?

Bye!

[prettypics]

Thanks. I've just tried that (uk phone number) and I'm mot getting a verification code.

[alemoppo]

Could you please provide your telephone number (you can omit last 3 digits). You can also write me a PM with the number.

Bye!

[prettypics]

UK number with leading zero included but last 3 digits excluded: 07563 756***

I have just tried again. This time I get 'https activating' then nothing happens. No chance to enter phone number.

[prettypics]

Please see reply and my other comments and respond. Now 'https active' but still getting 'not secure'

[alemoppo]

I'm sorry, but no one responds to me. I'll retry now.

Bye!

[prettypics]

You can reply here or leave a text on my phone. What do I need to do to get rid of 'not secure' message?

[alemoppo]

Could you please try now to attivate https?

Bye!

[prettypics]

It says 'https active'