Pi-Hole doesn't work after reboot (Debian 11 Bulleye)

I installed PI-hole on the same machine that I expect to use Pi-hole for DNS, my linux PC (Debian 11, Bulleye) and I used "method 2" for installation (and config my router). Its work fine but after reboot my PC it doesnt work anymore. I tried to go to http: //pi.hole/admin but it won't let me.

Debug Token:

Your Pi-hole debug log is normal and in the past 24 hours it has received the following DNS traffic:

   [2021-09-14 23:26:25.154 1155M] Imported 6663 queries from the long-term database
   [2021-09-14 23:26:25.154 1155M]  -> Total DNS queries: 6663
   [2021-09-14 23:26:25.154 1155M]  -> Cached DNS queries: 1347
   [2021-09-14 23:26:25.154 1155M]  -> Forwarded DNS queries: 4527
   [2021-09-14 23:26:25.154 1155M]  -> Blocked DNS queries: 241
   [2021-09-14 23:26:25.154 1155M]  -> Unknown DNS queries: 0
   [2021-09-14 23:26:25.154 1155M]  -> Unique domains: 637
   [2021-09-14 23:26:25.154 1155M]  -> Unique clients: 9
   [2021-09-14 23:26:25.154 1155M]  -> Known forward destinations: 2

If the Linux PC is not using Pi-hole for DNS, then it won't be able to reach http://pi.hole/admin, since only Pi-hole can resolve this domain name to the IP of the Pi-hole.

From the terminal on the Linux PC, what are the outputs of the following:

nslookup pi.hole

cat /etc/resolv.conf

Unrelated to this issue: these do not appear to be valid adlist URLs but they both appear in your adlists.

** [ DIAGNOSING ]: Adlists
   id     enabled  group_ids     address                                                                                               date_added           date_modified        comment                                           
   -----  -------  ------------  ----------------------------------------------------------------------------------------------------  -------------------  -------------------  --------------------------------------------------
   2            1  0             https://weaveradrenaline.com                                                                          2021-09-14 01:30:08  2021-09-14 01:30:08                                                    
   3            1  0             https://weaveradrenaline.com/n2ymv15m7p                                                               2021-09-14 01:32:24  2021-09-14 01:32:24

Screenshot from 2021-09-15 00-42-23

Regarding the URL in the list, what I wanted to do is block those addresses (I watched a video on YouTube) but I think that was not the way.

You're right, Pi-Hole works. The reason I did the post was because I was testing on Chrome at the time of posting. My default browser is Firefox and in this browser Pi-Hole works fine. Now when I open another browser, like Chrome, Pi-Hole doesn't work. I did the test by opening different pages and the ads appear in Chrome and not in Firefox.
There are two problems that I am noticing:

  1. If I cannot enter the Pi-Hole page using the IP assigned to me, how do I add web addresses to the block list?
  2. Every time I want to open a page it takes 3 or 4 seconds for it to open (using any browser).