Yes, that's also valid. Verbs are often at the end of a Latin sentence.
I wrote the correct translation and it said it was wrong. I did report it but the form didn't really allow me to explain what was happening and the options to select weren't exactly describing the bug.
Was it the same tra slation as the correction you were shown? If not, it was likely a translation that's already been added but hasn't gone live for users yet. If so, triple check for typos, and if there are none and the correction is exactly the same as what you wrote, take a screenshot and send a bug report.
Latin is a pro drop language. You can drop the subject pronouns. Since the verb is only used with I (ego) you can leave it out.