Photos larger than 1MB will not send over WiFi Calling even with Advanced Messaging activated...

I have chatted with customer service and the tech department 3 times now on this issue with the last time being very unhelpful.

I started out yesterday just asking for someone to help me with an issue I have had for a couple weeks of picture messages not sending over wifi calling or taking forever to send (30 minutes or longer). The first person I talked to said they fixed the issue on the back end and told me I shouldn't have anymore issues. I noticed my picture messages were sending after that for a couple hours but then it started acting up again so I got on another chat. During the second chat, the person told me they had it fixed and had contacted the back end developers or something and gave them my email so that I would get updates on this glitch. She also told me to "rest assured" that it wouldn't happen again and that she would put a note on my account telling people what the issue was and how to fix it. My picture messages yet again seemed to be sending just fine for the rest of the day yesterday.

Fast forward to this morning and my photo messages are not sending AGAIN! I get on ANOTHER chat with someone who looks over what I tell him is the issue and ultimately sends me over to the "tech department". Once connected, the person tells me that there is a 1MB limit on picture messages so I am out of luck since all the pictures ive been taking are over that size. I told them that I had not experienced an issue with this before a couple weeks ago and that I don't have the issue when sending pictures over mobile data when I have 5G. I then explained how I have poor signal at my house so I am forced to use wifi calling since AT&T has no other solution for that last I knew. They then end up telling me they can get a cellbooster requested for me. I ask if it costs anything extra and instead of answering me they say "we have exhausted our resources to help you and your issue still isn't resolved so I am sending you over to my supervisor"... Not sure why they couldn't answer that question so that's what I ended up asking their supervisor and sure enough it would cost me an additional $299 just to get that cellbooster. Absolutely not happening since I already pay AT&T plenty for service.

However, since getting off of that chat without my issue being solved, I began researching about this 1MB limit. I discovered that AT&T boasts about having thus Advanced Messaging setting which allows you to send larger photos over text... I have had that setting turned on the entire time so I should've been able to send these pictures the entire time! Lovely of the tech department to not mention that at all. To top this off, I am discovering that there is no way for me to reduce the resolution that my camera takes photos at on my phone (Samsung Galaxy S21 5G). The only thing I can do is manually change the size after I take a picture which is pretty ridiculous to expect someone to do every single time. 

I am hoping maybe someone else besides AT&T has some sort of fix they can share with me because AT&T seems to not know what they are doing.

Thanks in advance!