The phrase "allowed users to submit" is correct and usable in written English.
It can be used when describing a feature or functionality that permits users to provide input or contributions, often in the context of software, applications, or online platforms.
Example: "The new update allowed users to submit their feedback directly through the app."
Alternatives: "permitted users to submit" or "enabled users to submit".
Described as an "open slush pile" by Cory Doctorow when it launched in 2008, Authonomy allowed users to submit their manuscripts for discussion, critique and ranking by fellow site members.
Digg allowed users to submit and rate news stories by voting on, or 'digging,' them.
Steemit became one of the first working decentralized applications and allowed users to submit content and pay content creators.
The Princeton team was the only one comprised mainly of women, and their winning project Color Me Bold allowed users to submit a photo of an outfit and receive instant, algorithmic fashion suggestions for how to improve its color scheme.
The main site has a Photo Vogue section that allows users to submit their own fashion editorial.
For songwriters, missing out on some royalties is only one of the problems with the unlicensed sites, which often allow users to submit the lyrics.
The site allows users to submit consumer complaints and offers answers to 250 common consumer questions on topics like paying for college, owning a home and sending money to another country.
Satisfly, based in Hong Kong, allows users to submit profile information as well as their flight "moods" -- whether they would prefer to talk shop or chat casually -- and other details like languages spoken and preferences about potential seatmates.
The updated app will allow users to submit information about a car accident, including vehicle information, a description of the accident and up to four photos, directly from their phones.
And Wikifashion, which was started in 2009 by Madeline Veenstra and Coen Hyde, allows users to submit and edit articles on numerous fashion topics, including individual designers, magazine editors, models and photographers.
One request was for users to be able to confirm their identities without submitting government ID; the groups suggested "allowing users to submit written evidence, answer multiple-choice questions, or provide alternative documentation such as links to blogposts or other online platforms where they use the same identity".
