Problem with push notification mt5

Hi to all,
On one PC, I have three MT5 platforms with the same account, and all three send me push notifications to my phone.
On three other PCs, I still have the same MT5 with the same account, but I don't receive push notifications. I checked that I entered the ID correctly, but it doesn't work. Is there a limit to the number of platforms that can send push notifications?
thank's in advance

I have similar problems; I have tried to reinstall my MT5 and it's not working still.

I found this and it worked for me
For the users who are in trouble with this issue, you can try the following steps to see if it works for you (at least, it works for me)
1 - You install again the mt5 platform from the broker you are trading on another computer (if you install on the same computer, just change the install directory)
2 - Launch the app and no need to login to any trade account. Set Enable Push notification to your mobile mt5 and send a test to see if it works.
3 - If yes, select File - Open Data Folder and access to "config" folder then copy the file "servers.dat"
4 - Back to your non-working mt5 platform, select File - Open Data Folder and access to "config" folder.
5 - Then close this non-working mt5 that is running.
6 - Paste the "servers.dat" at step 3 to the "config" folder at step 4
7 - Then relaunch the non-working one and check if Push notification is resolved.
Please try, hope it also works for you guys !

First of all, thanks for your reply...unfortunately, I followed the instructions step by step but it still doesn't work...the incredible thing is that on PC n1 the push notification works on 3 platforms but it doesn't work on other PCs or even on other platforms of PC n1

I installed a new platform and it works...the waste of time is that now I have to transfer all the templates and profiles for about ten platforms...so in the end it seems that the only way is to reinstall the MT5

Thanks for the detailed explanation

But isn't it the same to say copy a working server.dat file into all other MT5 that you want push notification to work? Or am i missing something?

So you just need a server.dat file where notification is set and works.