In May 2018, a new data protection law (AVG) will go into effect in the Netherlands. This is causing many archives to reconsider their privacy policies.
Some archives have published population registers from the period 1918-1939 online, and are now taking them offline again since these may contain information about living people. The Apeldoorn CODA archives have already done so. Unfortunately, that will also limit access to the information about people who are deceased, which is the majority of the people in these records.
If you need population registers from this period for your research, I recommend you download them while you can, since they may be taken offline. You can check the Digital Resources Netherlands and Belgium website to see what population registers (“bevolkingsregisters”) are online for the different provinces and towns.