Don't take it personally - Upwork receives thousands of applications daily, and most are auto-rejected / auto-accepted. Try adding some more "skills" to your profile and complete the sections to the best of your ability. If you're still not improved, it may be because Upwork isn't accepting freelancers from your particular niche at the moment - in that case, I would advise you to switch niches. My brother (who is a trilingual translator) got approved literally within seconds, which goes to show that most of the approval decisions are being made by bots.
I'm sorry for the delay as I had to check your account with the team. The team will reach out to you through an email support ticket with more information on your account. Feel free to follow up on the same ticket thread if you need further assistance about your account.