Just to be very clear: we just provide hosting, you provide the website that runs on it. We provide tools to help you manage it (like Softaculous), but ultimately you’re responsible for maintaining your website.
If you then setup your website and forget the login credentials, then we cannot help you. It’s your website. We don’t have your admin credentials. We can’t login to your site, and we cannot reset your password for you. Not without essentially “breaking in through the window” so to say. So if you also don’t have your admin credentials, then you will have to do the breaking in yourself. But breaking in is more difficult than walking through the door, which is why it gets a bit more technical.
So the answer you got is about as simple as it can be. Because web hosting is inherently a technical product. If you don’t want to do or learn anything technical, then, stick to Site.pro, WordPress.com or another managed service. But be prepared to pay a lot more for the same features.
There is one option to reset the admin password that has not been discussed yet: by using Softaculous.
If your website was installed with Softaculous, then you can also login to the admin panel of your website by going to the Installations list in Softaculous, and then click the “Login as admin” button next to your website. You will be logged in to your site without needing any username or password.
You can just manage your website this way. But we do recommend to go into your profile settings in WordPress and edit your password, so you can login to your website directly without using Softaculous.
On another note, I checked your site and while WordPress is still installed, the site itself is actually hosted with Site.pro. If you publish a website from Site.pro, it will overwrite files from your currently install website.
You can fix your WordPress website and get rid of Site.pro like so: How to fix a corrupted WordPress installation
But that’s also a quite technical operation. If you don’t want to do that, just getting rid of the current Site.pro and WordPress sites and just starting over is more straight forward.
It’s the panel on https://dash.infinityfree.com, where you manage all your hosting accounts and so on. Not to be confused with the hosting control panel at https://cpanel.infinityfree.com
If you have a different name for it, I’d love to hear it.