I can't get text messages anymore?

Hello yesterday I get no sms delivered so I charged my phone via aldi talk, and usually always gets you dan so a confirmation via sms but I did not get so I was skeptical and have about another handy tried me an sms to Send and which is dan not arrived I have a few friends asked if they could write me a short sms they even are all not arrived write sms I can with the phone already only there will be no going out on my cell phone on, which means from the phone they do not just come in phone calls is also normal what's going on with my phone have a huawei p20 lite can help me who thanks

Contact your mobile service provider / provider and check the proper installation of your SIM card.

Is perhaps the SMS memory full? Did you delete old messages?

Have all already deleted but did not work

I can telephone, yes

And before that worked

And which I can only send yes not receive

What's in the Aldi Talk app, how much credit is on it?