I have joined mingle2 few weeks ago. I paid for mingle plus upgrade but my account has not been upgraded. I am not getting any privileges meant for mingle plus members.
Not sure if there is any customer service number or any place for help. What is going on here?? It’s there any admin that running this site and being answerable to requests or inquiries??

You need to contact Support. Use this link https://mingle2.com/welcome/contact_us

When I was chatting flag messages coming , I don’t know that, please solve that

You need to elaborate. What messages? From whom? Do the messages not state what you need to do?

you mean that you are seeing a flag symbol beside each private message you are getting from others?

Hi all. I have a question, why when looking at someone's profile I can't see when they last visited the site?
Hope this is in the right section, thanks.

Maybe if they http://mingle2.com/user/toggle_stealth_mode

Somehow my language changed I wanna go back onto English how do I do that please help me thank you

In the Android app tap on the rightmost icon (the circle symbol of an upper body) of the bottom toolbar => settings => Language.