Internet keeps dropping

@XfinityJamesC thanks for the reply.  I will send a direct message as mentioned.  I was looking at my account and it said I was eligible for a hardware upgrade so I went ahead and upgraded the modem.  Although, It said my XB7 modem was not capable for my speed tier or something to that affect.  So I'm hoping the newer 'upgraded' modem will help the connectivity.  The picture of the 'new' modem (albeit a icon) looks like an older model (just by comparing to the modems being offered by Xfinity and knowing what older modems look like).  So I'm hoping to be surprised by what comes from Xfinity.  It's just maddening that I'm suddenly having this problem.  I posted this message at around 1 am this morning and it appears that I still don't have internet 13 hrs later after resetting the modem several times.  Now instead of the light turning white after the flashing green....it turns back to yellow and just flashes.

So I received an Xfinity package via delivery when I got home.  Before I opened the box, I checked the internet.  It was still not connected with the light flashing yellow.  I then open the box.  It was both the Modem and the TV box that I upgraded to earlier that morning (1:30ish am).  I open the modem first, scan the QR code to start the installation process, the scan of the QR code on the bottom of the modem did not register, I picked the 'enter manually'.  So I enter the CM MAC # and again. it did not register.  I tried again same thing.  I decided to contact Xfinity Assistant per the button on the setup.  I gave the associate the CM MAC # and she could not find it.  She asked 'who sent you the modem?'.  I told her 'Xfinity'.  She said she could not find it and asked if I could wait.  She came back on the chat and said what did I 'order', I told her my account said I could upgrade my modem and TV box so I went ahead and did so.  I explained the equipment that came in was the modem and TV box.  She said hold again.  After she got on we were chatting and then I received a text from Xfinity that my equipment was being 'shipped'.   I asked if I got this what is being 'shipped'?  She said, she thought the package I received was for Xfinity NOW pre-paid service???  Why would I order prepaid if the note on my Xfinity account were check boxes to upgrade my equipment for my plan.  Meanwhile she said my equipment was indeed shipped and it 'should' be the correct equipment.  Once it comes in a can return my old equipment and the other Xfinity NOW equipment to my nearest Xfinity store.  She would add a note to ensure I would not get charged for the upgrade or for the pre-paid equipment.  She asked me to plug my old modem back in in and she would remotely connect it, which she did.  It came right back on to the white 'connected' light.....that was short lived as I woke up this morning to no internet service (or digital phone) with my modem flashing yellow again.  [Edited: "Language"]......The person I chatted with was very helpful, but if she can manually connect me, why can't the regular 'help' Xfinity chat assistant connect me remotely.  I'm always weary about them setting up a technician appointment with the description 'there may be additional fees'.... I was happy about the fast shipment of the 'upgrade' (that wasn't an upgrade).  Now, I have to wait for the real equipment and cross my fingers that will help my connection.