captchas showing math symbols as unicode symbols?

Hi,
I have run into a strange issue, that I think is actually intended, but does not allow me or some of my users to use the captcha for all the forms when it is enabled. The issue is that the math symbols for multiplication, subtraction, and addition are some kind of unicode symbol that my screen reader cannot read (I am blind, so use jaws for windows to read the screen out loud to me.). It, however, does not recognize these symbols, and simply says nothing when going over them. This makes it impossible to tell which arithmetic operation I need to perform. Is there any way that the symbols can be changed to simple -, */x, and +, instead of these symbols? I understand the use of these symbols may be for more security, so in that case can there be an option to use regular ascii symbols instead of these unicode symbols, for more accessibility at the cost of slightly less security?
Thanks for any consideration,
-Michael.

https://wordpress.org/plugins/all-in-one-wp-security-and-firewall/