Hi, I'm afraid to say this, but DON'T buy any hardware from Mikotik, NO SUPPORT AT ALL.
For more than a year problem with Mikrotik WAPac and WiFi clients with broadcom chipset.
Emailed a lot, given all necessary info, no results, last emails don't have any response!
I've been MikroTik networking gear for close to 10 years now. I've never once had a bad experience with their support. They respond pretty quick.
The support is orders of magnitude better than Ubiquiti. As others have said, make sure you provided an exported config (/export hide-sensitive file=myexportedfilename) and a supout.rif file. You can then drag the resulting files from the file window in winbox to Windows file explorer before uploading them to the MikroTik support website.
Even before I get to MikroTik, I have the best distributor in the world to lean on,
https://wirelessnetware.ca/. The owner, Hani goes above and beyond, is super knowledgeable on MikroTik routers and switches (and networking in general...he had several Cisco certs previously, but dropped Cisco when he realized how much more he loved MikroTik). If you're in Canada, definitely give Hani a call. You'll never look at any other networking gear ever again.