Because my mom's neck is not doing well, she hasn't been very active on her Instagram.
Sorry about this, but I'm doing well! This time, the comments have been disabled.
Thank you for your understanding.
ご質問ありがとうございます。
"Because my mom's neck is not doing well,"=「ママの首があまり良くないので」
"she hasn't been very active on her Instagram."=「インスタ低浮上でした。」
"Sorry about this, but I'm doing well!"=「ごめんなさい!でも僕は元気です。」
"This time, the comments have been disabled."=「今回はコメント欄を閉じています。」
"Thank you for your understanding."=「ご理解ありがとうございます。」
ご参考に。