Issues on both paid MC PE and MC Java: Auto Quit in MCPE and Unlimited Error in MC Java

I tried relogging in, and it somehow worked. however, eventhough im playing on the paid account, the button shows "Play Demo"...though i feel relieved i have dealt with the errors. atleast im progressing. Thanks for your support. It was mainly resolved because of your suggestion to check the NAT type that i was able to check some settings which are needed in opening the NAT type...Thank you.

I can suggest you if possible try using another wifi network just to see if maybe it’s your internet.

If you’re able to do it, please enable mobile hotspot on your phone and connect your PC via wifi to it.

If login button works, seems that is something related with your own network.

You can double check in your PC NAT type opening Xbox Console Companion App then go to settings > general > network and let me know if NAT type is open with your actual network.

If yes, I can also suggest disconnecting your router from power for about 3 minutes. Connect it again, restart your PC and try again

I think I was disconnected or something in this site..but i was trying to fix the NAT type.

at first it says, "Block"

but after doing some fixes, it finally shows the following:

Hi and thanks for reaching Xbox gamer's community. My name is Josef.
Thanks for reaching out! I'm an Independent Advisor and a Microsoft user like you.
I'll be happy to assist you out today.

Sorry to hear that Richie, in situations like this as you’re facing issues with two different versions of Minecraft and even if you try using another account you’re not able to play the game.
The best option will be contact Mojang support in the link below:
https://help.minecraft.net/hc/en-us/requests/new

I’m the meantime you can try this on your PC to see if you’re able to log in there at least:

Open Settings, click Update and Security and then Windows Update;

Click Check for Updates;

Click the Download and Install Now option, if available;

Also, check the Microsoft Store for any updates on the Xbox apps and its services.

If everything is up to date, try this:

Go to windows settings > apps > search for gaming services app > click on it and select advanced options.

After that, click repair and then restore

Then do the same for the Xbox app and Minecraft launcher app:

Go to windows settings > apps > search for Xbox app > click on it and select advanced options.

After that, click repair and then restore, open the app and try again.

You can also download Old Minecraft launcher listed as Windows 7/8 in the link below and try log in with your Microsoft account there:
https://www.minecraft.net/en-us/download

If maybe it says instead, moderated, strict or something different to open.

You may need to open ports below:

Port 88 (UDP)
Port 3074 (UDP and TCP)
Port 53 (UDP and TCP)
Port 80 (TCP)
Port 500 (UDP)
Port 3544 (UDP)
Port 4500 (UDP)

For this would be better contact your internet service provider and ask them this.

After that try login on Minecraft and see how it goes