I admire the initiative, but I think that a supporting website or social media link (Facebook or Twitter) – where people can ask questions or offer to volunteer help would provide people with more reassurances that it in fact was not a sophisticated scam.
Also, the actual physical address (and telephone number) and a named point of contact (e.g. a treasurer or secretary) for the Rotary Club should be included and allow people to know where it is based so people can walk in to donate.
The problem you have is that our banks are telling us all the time NEVER send your money to an unknown bank account number and sort code. It just screams red flag. My mobile banking app tells me this every single time I send money – even to family members where repeat transactions occur.