C4000: fix your broken firmware please!
Hello TP-Link,
I have just wasted a lot of time on a problem caused by a major bug in your firmware that you've known about for more than a year.
When entering a DHCP reservation, if the Client Name contains a space, your DHCP server stops handing out IP addresses. This is a major flaw.
Bugs happen, but what is really incompetent is your leaving it broken for so long – this thread from October 2018 shows that your tech support people knew about this at least a year ago.
What shoddy behaviour. Do better please and have more respect for your customers.