I apologise for the delay replying - I can only use social media when in my spare moments so sometimes my replies are delayed.
I can only use social media in my spare time so I apologise for the delay in replies this sometimes causes.
Sorry for the late reply. I log in in my spare time so sometimes it takes a while for me to respond.
「隙間時間にやってて反応が遅くてごめんなさい (SNS)」＝ I apologise for the delay replying - I can only use social media when in my spare moments so sometimes my replies are delayed. / I can only use social media in my spare time so I apologise for the delay in replies this sometimes causes. / Sorry for the late reply. I log in in my spare time so sometimes it takes a while for me to respond.
ボキャブラリー
apologise ＝ 謝る
delay ＝ 遅れて
reply ＝ 返事する
response ＝ 反応
spare moments, spare time ＝ 隙間時間
sometimes ＝ 時々
cause ＝ 原因となる、起こす
log in ＝ ログインする
social media ＝ SNS
take a while ＝ 時間がかかる
イギリス 
