@SW-User I should be the one who's thanking you for giving me the opportunity to help you to understand Islam. I'm learning too. We say alhamdoliallah.
I understand that learning a new language can be a challenge, but I believe in you and I think you should take the idea that it's difficult to learn Arabic out of your head. Even if you feel that it's difficult for you because of some learning disability, I believe with your sincerity God will make it easy for you. Just believe and trust in God and do your best.
What I learned is that making du'a (supplications) can be done in any language. It doesn't have to be in Arabic. But making salah (our 5 daily prayers) have to be done in Arabic. Why?
1. We recite Quran in salah, and any translations of the Quran are not considered Quran, they are merely translations. So, when you do your salah in English, you are not reciting the Quran.
2. Muslims do salah in congregations, so they need a common language for them to pray together. Now, if we go to any country around the world, and we want to do salah in the masjid, we can do that without concerning about the language of that country.
Now, I understand that you find it hard, but once you try it will become easy. My humble advice to you is that .. try to do salah in the masjid, in this case you won't have to recite, and this also will help you memorize some ayat of the Quran and the steps of salah as well.
Also, all you have to do now is to memorize surah Al-Fatihah (the first surah of the Quran), because we recite it in every salah. Beside that, try to memorize one short surah to recite it after Al-Fatihah. You can find those surahs at the end of the Quran, their length is 1 or 2 lines. Do that and with time you will find it as easy as you drink water.
Don't delay doing salah until you memorize those surahs though. If you had to read from a page or your phone while you are doing salah, then do that. Just don't delay it.
I will make du'a for you and in-shaa-Allah you will enjoy your salah in Arabic in no time!
I have never used MuslimPro, but if it's providing good teachings of Islam, then it's okay to download it and use it in-shaa-Allah.
Since you're living in the United States, I'd suggest that you sign up for Bayyinah.tv It's an Islamic institution that helps English speakers to learn Arabic, and study Quran. They are based in the United States, you can find them online.
May Allah make it easy for both of us.. let me know if you have further questions.