In this case I would contact the person that restored your site. The only option I can think of is the change the author role to an admin role via the database itself.
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Now for the why: The internet is a wonderful place full of very nice people and a few very bad ones. I’m sure everyone here is very nice however, by giving some ones keys to your house you are trusting they wont steal anything. Likewise the person who takes the keys is now responsible for the house FOREVER.
Please be aware that repeatedly asking for credentials may result in losing access to the forums.
So, bottom line: Do not ask for or offer credentials on the forums.
Thanks for clarifying this and sharing the link. I wasn’t aware of this. I only have the best intentions as I love to support people. Otherwise I wouldn’t organise WordPress Meetups and WordCamps on a regular base. But you’re totally right. I won’t make that mistake twice! ??
Again, thanks for helping me to become a better supporter and ave a great weekend,