I checked your account and it was accepted. It looks like you joined an agency as an exclusive member. Exclusive agency member can only work on contracts under the agency while non-exclusive member has a choice of applying for jobs either under the agency or not. An admin can change the status of the agency member in the Settings> Members & Permissions.
You can find more information about it here.
I've created my profile two months ago and I haven't heard back from Upwork.
Today I've recieved an email that said: "Action needed: Your profile is no longer appearing in client searches"
I can't submit a proposal to a job since in order to do that I need Connects, when I try to get them the platform show a message that said that my profile has not been yet approved.
What can I do to get an answer about my profile approval?
I checked and can confirm that your account was accepted. Welcome to Upwork!
For help getting started, please read up on the freelancer resources for great tips and insights on how you can work successfully on the platform. For more information about working safely through Upwork, please read these tips for avoiding questionable jobs.
I hope this helps, and good luck!