You can at the people with a bunpro logo in their icon, they usually aren’t offended by customers asking questions about their product!
In the sentence you quoted maybe a translation along the lines of “the aging of the population is progressing” would make it easier to map the parts?
But this grammar point tends to produce weird translations if they’re too literal. For example, the 高齢化 has a companion, the 少子化 (small-number-of-children-ification of a society) and they’re often grouped together as 少子高齢化 too. In English we’d probably have to split that up again to make sense.
If you want more examples, another one that tends to come up in JLPT questions is 地球温暖化 (global warming). Or look at chemicals, those can be kind of easy to map to English. E.g. 酸素 is oxygen and 酸化 is oxidation. So something like carbon dioxide becomes 二酸化炭素 (~twice oxidized carbon), etc. Maybe a bit above N4 now that I think about it.