@ItaliaKev Thank you very much for the update. It's glad to know it is working properly now. Just to confirm, have you changed or modified anything in the network to make it work again?

@MHB2 Hello, thanks for reporting the issue to the community. Please refer to the following suggestions: 1. Update the following driver for your WN881ND:...

@PaulFI Hello, kindly refer to the below instructions to check the connection again: https://www.tp-link.com/support/faq/2698/ Below is the latest driver for the adapter, you may give it a go and see...

@Anadi Thank you very much for your kind update. I hope you will receive the replacement soon, good day.

@Dave_Cz Hello, sorry to hear that. While as far as I know, Apple updated lots of functions on this new version, thus it may take time to develop the new driver to work with the new system, please...

@Jack-Lemac Hello, as far as I know, this T4U_V3_181018_Linux_beta.zip is only tested to be compatible with the Linux (kernel 2.6.18 ~ 4.11), while your system seems updated to a newer version, so...