Youre thinking on most orals is correct. However, Proviron does not have the toxicity to the liver that other orals do and can safely be ran for longer periods
Umbrella always does their best and has great customer service. You jist have to be realistic in understanding their limitations on hours of business and that they dont have a warehouse full of people shipping, answering emails and answering phone calls.
Dosage is a little off, and im not real sure about that source. Theres lots of information here to help on sarms. Also check out dylans videos. They are helpful. Umbrella labs is a good option if you want a good spurce as well