Trouble with mywifiext

I’m having trouble with my extender randomly dropping connection to the router. I did a bunch of googling and finally found that the problem is probably that I need a firmware update. The manual says to do that I need to go to the mywifiext .net and log in and follow instructions. The problem is that when I type the address in my browser it just goes to a blank page with the loading bar stuck near the beginning as if it’s not loading at all. I’ve tried different browsers and it’s the same for each. Any other website loads fine.