offering lease without success

Hello to all!

I know that there are quite a few similar topics here, but unfortunately, I could not find anything applicable to my situation.

Most computers connected via small smart switch, but the problem I see in the loc has to do just with one computer.
I never had it, and at some point recently it has started. I upgraded to recent long term firmware hoping it may fix it, but no.

This PC has an automatic DHCP, and MIKROTIK rb3011 is supposed to dish out the same ip according to “static connection” based on mac address of the computer. Always worked well. I do not have any problem, the pc gets its IP, every time I turn it on, in the log I see "DHCP assigned ip to the computer in question, yet. this thing “DHCP-1 offering lease 192.168.1.xxx for MACADDRESS without success” still comes every couple of hours. The lease time I have set for 24 hrs.

Perhaps you could give me a hint where else I can check… What could cause this issue.

Very much thankful