Translation of ringförmig

I hope you could understand my last letter to you. You see, when I write in Spanish I am not very confident. I always question myself and each and every sentence takes about fifteen minutes.
Let me summarize our meeting from Sunday, please give me feedback if something is unclear. I will send you the study material, including lessons and vocabulary lists to ensure the accuracy of training.
Thanks for letting us know. What browser are you using? Is it the first time that this happened? What Internet connection are you using? Please give me the time and date when it was happening.