Today I changed my Internet provider, now I have 120 Mbit/s cable Internet: DIR-890L connected to Router Technicolor TC7200.20.
During this first hour everything ok, let's wait 7-8 days
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By the way:
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the admin page of "DIR-890L" and "Technicolor TC7200.20" is the same: 192.168.0.1
so I was able to access the DIR-890L admin page only via wifi at http://dlinkrouter.local and setup the new connection with the setup wizard;
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regarding missing new firmwares at D-link Croatian support page, I tried today 20 times to call D-Link Adria
(+385 1 61 89 142) but the line is always occupied.