Are you sure?
visit view-source:http://btools.rf.gd/heb.htm?i=1 It shows invalid characters, all you need to remove the heb.htm and write your content in heb.html instead (create this file through file manager).
The problem seems to be with the encoding of the HTML file itself.
If you have Notepad++ (or similar), open the file using Notepad++ and go to the menu:
Enconding → Convert to UTF-8.
You removed the DOCTYPE but that doesn’t solve the problem.
The file’s encoding is still wrong. Look at the characters highlighted in yellow in the screenshot below:
No, sorry. I refuse to code in a smartphone.
I don’t know any good code editor for Android.
But I just confirmed that the problem is, indeed, what I was telling you from the start.
I downloaded your your HTML file, opened it it using Notepad++, and this is what I found:
There’s one unlikely but nevertheless possible thing that no one has mentioned. Are you sure you didn’t originally upload the wrong thing then forget to hit the Save button when you were done editing it. I think the Close button only closes the file but doesn’t save anything.