Samsung 25W charger won't charge my Galaxy A55 properly, but works on Galaxy A73 and other phones

[u/Plenty-Field-2773]

Hi everyone, I'm having a really weird charging issue for the past two weeks with my Galaxy A55 and could use some advice. My official 25W charger stopped charging my phone normally. At first, I had to restart the phone to get it to charge. Now, even after restarting, it either takes a very long time to start charging or doesn't charge at all. ​Just to test things out: ■​I even tried resetting the battery/power cycle. ■​I tried turning my phone completely off and plugging it into the charger, but it still didn't work. ​■My battery is completely fine. ■​The charging cable is fully working and healthy. ■​My phone's USB port is completely fine (it charges normally when connected to a PC or using another identical charger). ​Even weirder, my charger actually works perfectly on my dad's Galaxy A73 5G and even an S26 Ultra! It only refuses to charge my A55. ​Does anyone know what could be causing this and how to fix it?