My agency is asking for more money, is this ok?

The agency I adopted from recently sent a letter asking for money to support their operations due to circumstance in the difficulties with 2 of the 7 countries they are affliliated with. Is this now a common practice for agencies to request monetary contribution to maintain their services? It feels so inappropriate - am I off?

I can't speak to this

I can't speak to this specific request or agency, but it's not at all unusual for non-profit organizations to solicit charitable donations from "alumni" of their programs.  Some do it more tastefully than others, of course.  Most non-profits rely, at least in part, on donations from people who support their mission to cover their operating expenses. If it makes you uncomfortable (or you think this went beyond a typical solicitation into inappropriate territory), it would be worth letting them know and asking them to remove your name from their mailing list.