page not loading

I can see individual pins, but boards will not load, nor will the main page.

I have been trying to login for the last couple of weeks on my home PC and it will not let me sign in my login and password. It keeps jumping back to the home page to choose login or join. This is extremely frustrating. I can use my mobile app but that is useless when I need to use it on my PC. I also get messages like 502 as well and it keeps refreshing itself. Very very annoying. Please let me know what can be done. Thank you.