Just a tip that may help with the Captcha (and other "hard to read" things we all run into on the web):
In all Browsers; Chrome, Firefox, Edge, whatever, you can hold the CTRL key and then hit + or - (I use the ones on the keypad on the right of most keyboards). This will zoom the screen bigger with Plus, and smaller with Minus. CTRL and Zero on the keypad resets to normal on MOST Browsers.
So just CTRL and + a couple times and it will be easily readable and CTRL and - back down when done. Easy-Peasey.
On MAC products it's the CMD key IIRR, so CMD + for bigger, CMD - for smaller.