Hi, I did deactivate all the plugins and the one causing problem with the menu is ELEMENTOR PRO. I did contact them to solve the problem and this is what they support answered – they say you should fix the problem:

Hi Anita.

Thank you for reaching out to us. My name is Sandra, and I’m part of the Elementor Tier 2 Customer Experience team. I apologize for the inconvenience you’re experiencing with your menu layout.

Upon checking the site I see the menu is coming from the theme and it seems to be conflicting with Elementor pro. However, I also noticed you have 62 plugins installed.
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Please note that as the number of installed plugins increases it might lead to compatibility issues and conflicts. Please consider double-checking the number of active plugins.
Ref.:https://www.google.com/search?client=firefox-b-d&q=how+many+plugins+wordpress

As a first step in this case, I recommend you try to to rule out the possibility of a plugin or theme conflict, please deactivate all your plugins (besides Elementor and Elementor Pro) and see if it helps. If it solves the issue, reactivate them one by one to find the culprit. If it didn’t help, switch your theme (temporarily) to a default WP theme such as Twenty Twenty Three, for example and see if it makes any difference.

As we have no control over coding for third-party plugins nor themes, we highly recommend that you report this issue to the support team for this theme so they may further troubleshoot and provide any recommendation (or possible fix) to resolve this issue.

If they need any technical details regarding Elementor, they are free to open an issue on our Github page where our developers will be happy to collaborate directly with them:https://github.com/elementor/elementor/issues/new/choose