I cant seem to log onto my account on my phone

I cant seem to be able to sign into my account on my phone which is what I would prefer to be able to use to upload pictures, I've tried multiple times and it doesn't seem to work, I believe I made a post on the help forums. If any of you can help I would appreciate it. The only way I haven't tried is to download Google Chrome, I would prefer to not have to download anything if possible but if the only way to fix this would require me to download Chrome I'm okay with it. I just wanted to see if any of you knew any other ways to fix this. Have a good day!

-Basic