Call center fixed my WP but changed pointer to root instead of subdirectory

Hello, everyone. This is my first post here.

I am not new to WordPress, I have maintained a couple of WP blogs for about 7 years now. Yet –to use an automotive metaphor– I just drove it, but I have never properly looked under the hood. So, while I could manage theme configuration, using and tweaking plugins and editing CSS, I have no knowledge of MySQL (which is what my host uses). And, yes, I use the services of paid webhosting service, which offers WordPress.

Now my problem. Three days ago, there was a problem with two of my WP installs. Both WP blogs no longer showed at all.

I called the Call Center of my webhost, and they told me that, while the database was in order, there was a problem with the pointer. They guided me through the process of resetting the pointer in MySQL. To me the pointer looked OK, since it indicated the subdirectory where my blog had always been, say: oxyz.com/mina. Yet they insisted that I should change the pointer to the root: oxyz.com . I thought ”well, this person must know better” and, eager to see my blog reappear, I went along. So I changed the pointer to the root.

After the call center person told me she changed stuff on the htpaccess, at last the blog reappeared, links and images and categories working just fine.

Only afterwards did I notice that now this blog’s first page appeared indeed in the root, thus in oxyz.com, and had thus replaced a welcome page I used to have there. I checked in the File Manager to check if the WP had been physically moved to the root, but NO, it still appears in the right place, in the subdirectory, in oxyz.com/mina.

Besides, when I navigate in the blog itself, I noticed that all the links to posts, or categories, or tags, lead to files that are located in the subdirectory oxyz.com/mina. Same thing for the images, they are located in the subdirectory, on urls like https://www.oxyz.com/smina/wp-content/uploads/2015/06/Oracolul_3.jpg

So, my question to you is this: How shall I proceed to have my blog back to its original location, that is in the subdirectory, instead of the root?

I should add that a side problem created by this situation is that, when I tried to reinstall another blog that used to be in a non-related subdirectory (oxyz.com/kidlit/book), the call center person installed in a subdirectory that appears to be oxyz.com/kidlit/book, but that physycally (as seen in the File Manager) is actually located in oxyz.com/mina/kidlit/book, which reallly creates a whole mess.

I would appreciate any help with this situation. Thahnk you!

(Note: I have replaced the actual urls with shorter ones, for commodity’s sake).

The page I need help with: [log in to see the link]