Translation:In my opinion, the internet is good for Esperanto.
In fact, the most used and accepted are the flap (like in Spanish pero) and the thrilled (like in Spanish perro). The English R is not so used, but people will understand you, and probably almost no one will complain about that (some will only recommend that you try to make the flap or the thrill, but if you're having trouble with them, they will understand).
But the French R isn't so recommended, because it can be mistaken as Ĥ (for example, I'm Brazilian and often mix those two sounds).
The last letter lets us know if it is a noun or an adverb or an adjective, so it can be important. Esperanto, esperante, esperanta
"esperant" is also a word in Catalan: https://en.wiktionary.org/wiki/esperant https://en.wiktionary.org/wiki/esperante https://en.wiktionary.org/wiki/esperanta https://en.wiktionary.org/wiki/Esperantujo#English So, you are asking the computer to guess which one you meant and let it give it to you correct even if you meant one of the other forms?
Many of us have hit the ENTER key before we meant to, so I totally commiserate with you. I used to hope that they would understand that when there was supposed to be an apostrophe and I hit the ENTER key by mistake that they might figure out that I did not mean to put "C'' instead of a whole sentence in French "C'est ....", but it is rather difficult to get something like that passed. I would have appreciated that they check for the apostrophe and ask if I really was done before leaving.
Generally a one letter typo will pass if it does not form another word.
In this case, it looks to me (as someone who is NOT an admin, but who has talked to the admins about how this works), there must be only a few answers registered with "according to me" in it -- so the computer finds the answer that it thinks you were trying to say. Next time, try "in my opinion" and see if it then accepts "internet."
If it doesn't accept your answer and you think it should, then report it. If you've reported it and haven't heard back "several times" - then relax and keep learning.