Declined proposals are moved to the Archived tab on your Proposals page, so you can chech if the one in question ends up being archived. Having this in mind, it's more productive to watch out for the ones that are accepted, which would be moved to the Active Candidacies section and you'd receive a notification about.
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There are many jobs on upwork.So thats why its difficult to find jobs on one proposal you have to send more proposal of your interest and than you will get a job.If you are rejected you didnt know about that because the agents didnt say that you are rejected but if you are approved for the job you will get an email.
Thanks and good luck.
re: "There is no deadline for the contest that are launched by the customers?"
Maybe this is a language gap thing..
But let's avoid using the word "contest" to refer to a the job postings posted by clients/customers.
There ARE freelance work platforms that allow "contests."
Upwork does NOT allow contests.
Just call it a "job posting" or "job."