How to change H2 tag to H1 tag

We checked your issue. It’s a really strange issue. We didn’t get this issue from other users. But after checking our localhost the header tag is h1 in amp page. We cannot recreate your issue.
1. Can you please deactivate all plugins and clear cache. And install one by one. Maybe it causes other plugins.
2. After that, it is not fixed can you please export the settings and share that JSON file with us? We will import that file and try to recreate the same issue from our end.
Reference: https://ampforwp.com/tutorials/article/how-to-import-and-export-the-amp-option-panel-settings/

Hi Ahmed,

Thank you for the quick reply.

I tried what you suggested but still had the same issue.

Here is the link to the settings in pastebin: https://pastebin.com/3RG8L3mv

Is that okay, or you want it in file-type?

Sorry for the inconvenience. This is a strange issue. But we have created a ticket for this bug. We will be fixing this in our future updates.
Reference: https://github.com/ahmedkaludi/accelerated-mobile-pages/issues/4121

This issue is fixed on our latest version of the plugin(1.0.24). Can you please update the plugin and let me know if the same issue having or not.