Problem with google sites using a Namecheap domain

[Xyd9]

So, I wanted to create a website for myself, and I did. I made it on google sites, bought a domain from namecheap and everything was going fine. Had some problems but their team helped me fix them. Now a new problem emerged and it was that when I tried to access my website say from a mobile device I couldn't just type "exampl.com"(note this is just an example not the real domain name) and it also didn't work when I wrote "www.example.com". It only works when I type "https://www.example.com". Once it loads on someone's phone browser (I tested this issue on both iPhones and Androids) using "https://www.example.com" , it then works fine if I just try to type it as "exampl.com", or as "www.example.com". I tried fiddling with the dns settings of the domain but nothing seemed to solve it. Note: that "exampl.com", and "www.example.com" work fine if you use a pc browser, even switching to the desktop site on the phone helped. I used both Chrome and Safari and got the same results. PLS help.